i bought from them before, 16inch upper 556 nato FDE, once received barrel didn't seem to be center of FF handguard. so contacted them and they were able to pay for shipping it back and have it fixed. on the 2nd time it came back they switched out my barrel with a 1:8 twist which i wanted was a 1:7 twist.In this video I show my latest pride and joy, the Mk12 Mod 0 Build. I can't talk highly enough about Mk12/SPR builds and how much I love them. Next to no rec...05-MKH-PRB-RRB-DE. $915.00. This kit is for the do it yourself builds we just provide you with all the components to build the Mark 12 Mod 0. The kit is composed of PRI Gen III rifle length flat dark earth forearm, Gen III SPR PEQII FDE top rail, flip up front sight gas block w/ thumb wheel elevation adjustment post, Gas Buster charging handle ...The 5th SFG SPR or "Mk 12 Mod Holland" came from 5th Special Forces Group turning in their 18" SPRs to be rebarreled and improved. The program included: Retain Ops Inc 12th Model Suppressor. Retain optics. 16" BBL to replace previous 18" BBLs. ACE SOCOM carbine collapsable stocks to replace fixed rifle stocks. High quality, soft PVC vinyl patch.The SEAL recce would be a mode defined build with KAC FF RAS and optics/accessories often seen on the Mk12. SPR would be a 18” rifle length gas system with the Mk12 being the obvious example. The recce concept is perhaps my favorite build or genre if you will. It really suits itself as a “do all” rifle.The Mod H, or "Holland RECCE rifle" was introduced after the Mk12 Mod0 and Mod1 rifles, and the name is credited to Master Sargent Steve Holland, who was part of the group that developed the SPR rifle. The Holland RECCE rifle was was a retrofit upper of the Mod 0 with the Gen3 round hanguards. Mar 31, 2021 · I love me some Mk12 and in this video I give y'all a quick look at my new Mk12 Mod H build. For a full rundown on this rig, check out the insta (@)texasplinking Trying to figure out what AR15 I have, its a Bushmaster MOD. XM15-E2S and its stamped CAL. MULTI It shoots 223/5.56 Ive read that all Bushmasters serial numbers start with either a BFI or IL prior to the numbers,But mine starts with ARA. Any info will be appreciated.I dont know anything about an AR15 since Ive had an AK47 the last 25 years ...Note: If you are interested in owning one of these for yourself, check out the Sniper Central Heritage Mk12 SPR. Sniper Central. Filed under: Rifle Review. Tags: mk12, msr, sc endorsed, spr. Manufacturer: Naval Surface Warfare Center - Crane Division. Model: Mk12 Mod 0/1 SPR. Caliber: 223 rem / 5.56x45mm NATO. Barrel: Douglas Premium Air Gauged ...Precision Reflex Inc. MK 12 Mod H 16" 223/5.56 1-7 twist FDE Finish. Add to Cart. 18" MK 12 Mod 0 SPR 5.56 Cal. 1-7 Twist (BA Barrel) Add to Cart. MK 12 MOD T.We have not yet addressed the Mod H or the NSW Recce. That will be another topic. The latter two versions have shorter barrels. Enjoy with confidence. ... Douglas 16" Stainless Steel Mk12 Mod H Profile Barrel, 5.56, 1:7 Twist. $545.00 - $625.00. Allen Engineering. AEM-5 Suppressor for Mk12, Gordon and NSW RECCE rifles from Allen Engineering ...This kit is for the do it yourself builds we just provide you with all the components to build the Mark 12 Mod H. The kit is composed of PRI Gen III rifle length Flat Dark Earth forearm, Gen III Recce rail in FDE, PRI Rail mounted flip up front and rear sights in FDE, Gas Buster charging handle with military Big Latch, and AE brake & collar. All parts are in the with cerakoted FDE finish.115. This-Marionberry3451 • 4 days ago. Not quite a black gun I know, tweaking around some chemical etching options for bare parts. Let me know your thoughts, thinking about doing a full rifle with this and black to make a sort of aged modern musket. 575.The PRI built Mk 12 Mod H Navy SEAL sniper rifle shown here with a combo Leupold Mark 4 period correct scope, known as the TS30A2, and period correct bipod a...05-MKG2-PR-SR-B. $1,028.00. PRI Mark 12 Mod 0 Gen III upper assembly kit. The kit is composed of PRI Gen III rifle DPMS rifle length Black forearm, Armalite SPR Straight top rail, Armalite receiver elevation flip up front sight gas block A2 post, SR25 Gas Buster charging handle with military Big Latch. PRI Rear sight.The United States Navy Mk 12 MOD 0/1/H Special Purpose Rifle ( SPR) is a designated marksman rifle that was in service with United States Special Operations Forces in the designated marksman role until 2017, also designed to be shorter than standard weapons. This Mark 12 Mod H for Holland is built with PRI's Retro Gen III, which is most representative of the 16" Hollard receiver groups. This upper comes tested by PRI and ready to shoot 5.56mm NATO ammo. Charlie's recommends 77 grain Black Hills or Federal.MK12 MOD H 6mm ARC -FDE. Add a review. $ 1,400.00. Out of stock. SKU: MK12-MODH-6MM-ARC Category: Complete Upper Receivers. Description. Reviews (0) Brand new uppers assembled in house using the following parts. PRI Upper Receiver w/ FA & Ejection door.In practice, think of it like this: 11.5" is a longer 10.5". 12.5" is a shorter 14.5". 12.5" is long enough to be used in a rifle-ish role. It's not as loud as an 11.5". Its length is what people imagine a 14.5" is like before they get one and realize it's not as short as they had hoped.Douglas 5.56MM Barrel 16" - 1-7 Twist, MK12 Mod H. $504.00. Precision Reflex. Customers Also Viewed. Out of stock. Quick View Out of stock. Out of stock. Allen Engineering MK12 Mod 1 Threaded Muzzle Brake and Collar, 5.56/.22 Cal. $139.95. Allen Engineering.The Mod H, or "Holland RECCE rifle" was introduced after the Mk12 Mod0 and Mod1 rifles, and the name is credited to Master Sargent Steve Holland, who was part of the group that developed the SPR rifle. The Holland RECCE rifle was was a retrofit upper of the Mod 0 with the Gen3 round hanguards.Jul 21, 2018 · The SEAL recce would be a mode defined build with KAC FF RAS and optics/accessories often seen on the Mk12. SPR would be a 18” rifle length gas system with the Mk12 being the obvious example. The recce concept is perhaps my favorite build or genre if you will. It really suits itself as a “do all” rifle. Designed with serious firearm aficionados in mind, the PTR 91 GIR boasts impressive specifications. With an overall length of 40.5", an 18" barrel, and a weight of 9.5 lbs, it brings together durability and convenience. It operates on a roller-delayed blowback system and a semi-automatic action, accepting .308 and 7.62x51mm calibers.I came across a mixed supply of carry handles with forging marks from Cardinal Forge, Cerro Forge (key mark), and Brass Aluminum Forging (Square). I was wondering which of the three would be more desirable or if they are all roughly the same? Probably the Cerro. Nowadays you mostly see the other two.05-MKG3-PR-SR-B. $1,003.00. This kit is for the do it yourself builds we just provide you with all the components to build the Mark 12 Mod H. The kit is composed of PRI Gen III rifle length Black forearm, Gen III Recce rail, PRI Rail mounted flip up front and rear sights, Gas Buster charging handle with military Big Latch, and AE brake & collar.The majority of the SPR upper receivers were initially supplied by Colt, with others being produced by Diemaco (now Colt Canada). Colt had been outsourcing parts of its production to Diemaco for several years, then purchased Diemaco in February 2005. It is unclear whether the upper receivers for the later SPRs came solely from ArmaLite, or were a mix of receivers from ArmaLite and Colt/Diemaco. The Gen III was used on the later Mk12 Mod 0 SPR rifles and also on the Holland Mod H rifles with a 16" barrel. ... Mk12 Mod H 16" Holland FDE rifle from PRI - Precision Reflex - with Leupold Optics combo. Precision Reflex (PRI) PRI Mk12 Mod 0 Gen III Carbon Fiber Rifle Length Forearm - Dark Earth (05-073-03DE) ...05-MKH-PRB-RRB-DE. $915.00. This kit is for the do it yourself builds we just provide you with all the components to build the Mark 12 Mod 0. The kit is composed of PRI Gen III rifle length flat dark earth forearm, Gen III SPR PEQII FDE top rail, flip up front sight gas block w/ thumb wheel elevation adjustment post, Gas Buster charging handle ...This is what a Mod 1 is: Then came the Mk12 Mod H. Once again, this is a 5th Special Forces Group creation, and it's all that's Mk12, but with a 16" barrel instead of the "standard" 18" barrel of the other Mk12s. ... I did that with the Mod H, and made a 6.5G gun from the Ballistic Advantage 16" SPR-profiled barrel, in Grendel. I heard about if ...If not you may be able to break it loose by twisting it with a pair of channel locks or pliers. Thanks will give that a shot. The barrel is harder than the washer. If you pull it up even with the threads and twist with some channels it'll just thread itself to the barrel and you can remove it that way. I've done this countless times and it has ...MODEL/DESC: MK 12 MOD 0/MOD 1 Deployment Starter Kit. Out of Stock. FEATURED. Custom - COLT 14.5" SOCOM / Daniel Defense RIS II FSP - $975.00 Mayhem Machine Tool - C7 Carry Handle AR Upper Receiver - Stripped - $239.95 Other - A2 STRIPPED UPPER RECEIVER - $128.95 Nightforce - Nightforce NX8 1-8x24mm F1 .2 MRAD PTL FC-DMX E/ - ...Un scientific mk12 sound test AEM5IG @grave.solutionNavy SEAL with a Mk 12 mod 1. 6.3.2.2. Mk 12 mod H. The mod H was a return to the original Recce RIfle in many ways. It utilized a 40.5cm (16in) barrel and shed much of the weight that had been added to the Mk 12. Although the original Recce Rifle and the Mk 12 mod 1 share a rail system, the mod 0 and the mod H share a rail system too. …The MI starts at 1.41". It works with the PA spacers. You can calculate the heights using a chart easily found online. You can also just put the cantilever spacer backwards to keep the optic in a neutral position.Mk12 Mod H 16" Holland FDE rifle from PRI - Precision Reflex - with Leupold Optics combo. Knights Armament (KAC) Knights Armament SR15 KAC lower receiver, stripped, VIRGIN. $343.00. Colt. Colt M4 lower receiver, "Carbine" marked, stripped. MSRP: $650.00 ...291K subscribers in the ar15 community. Welcome to r/AR15! Share you builds, ask relevant questions, play nice etc.PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist, FDE. Precision Reflex. Quick View Add to Cart. Ace M4/MK12 Mod H SOCOM Stock with Buffer Tube Only. $197.99 $219.99. Ace.My New Mk12 Mod H Build - Quick Look. I love me some Mk12 and in this video I give y'all a quick look at my new Mk12 Mod H build. For a full rundown on this rig, check out the insta ...I have found myself loving these rifles and decided to build a MK12 inspired build. Heres my parts list so far. Aero lower and upper. Cmc flat single stage 3.5lb trigger. 16" faxon barrel 1-8 twist. 2.5-15x50 Athlon Ares BTR. PRI handguard. 6.8mm AEM brake 5/8x24 with collar. (for the possibility of a aem5 clone for 6mmm) Still need a stock as ...Sep 16, 2022 · In this video I talk about how I camouflaged my MK12 using Rustoleum spray paint. This is super easy to do and required very little prep work. You can easy b... As A1 stocks dwindled, A2 were used. Mod H rifles rebuilt with Ace SOCOM stocks Small parts: Standard M16A1 parts UPPER. The upper receivers, which ultimately differentiate the 4 variants of the Mk12, have the most variation between each other. Below, I’ll break down the Mod with its corresponding parts. SPR/”early” Mod 0Bartlein Barrels. Pick your specs, we will do the rest for you! 14.5" to 20" in length. Mid to Rifle Gas systems. 6.5 Grendel Chamber. Bartlein Match Grade SS Blank. Three options of Gas Block Diameter (.750, .875, .936) Threads 5/8x24, 3/4x24, or No Threads. Three Options of Fluting (Straight, Spiral, and Diamond)18 Inch SPR Mk12 Upper Half. BCM SPR Mk12 Upper Group Features. 18" BCM SS410™ Barrel. Rifle Length Gas System. Taper Pinned Low Profile Gas Block or Fold Front Sight Base. Rifle Length Handguards or Extended Rifle Length Handguards. BCM BCG with fitted HPT/MPI Bolt. Choice of Charging Handle. Choice of Muzzle Device.Aug 21, 2020 · The Sniper's Hide App is here! Download the app DOWNLOAD. Ive been looking at getting a Mk 12 and am between the BCM Mk 12 Mod 5 and PRI Mk 12 Mod H My question is does anyone have any experience with these and what are their thoughts? What sort of accuracy and range do you guys get out of yours. im looking for a precision rifle out to 6-700m I ... If not you may be able to break it loose by twisting it with a pair of channel locks or pliers. Thanks will give that a shot. The barrel is harder than the washer. If you pull it up even with the threads and twist with some channels it'll just thread itself to the barrel and you can remove it that way. I've done this countless times and it has ...Watch latest videos, sometimes even early releases! Sign up for the newsletter 🗞️https://tinyurl.com/9HoleReviews or https://tinyurl.com/SlateBlackHow tight.... Thanks. For colt, either the cage code, or if you want to go with an earlier colt clone, they have the "c" stamped or forged into the uppers. But yes if you want it to all be colt, you'd need either the 13629 cage code or "c" marked parts. Barrels are also either marked with "c mp" or "13629 mp". Once it hits unit armories, parts are switched ...The MK12 Mod H upper is 16.5" barreled upper with capable MOA accuracy. The flat top receiver has a Gas Buster® charging handle with military big latch, Pri rifle length Flat Dark Earth finished forearm, recce top rail that connects to the forearm rail. The upper also comes with a bolt carrier group, PRi's rail mounted flip up front and rear sights and AE brake and collar. The upper is ...The MK12 SPR is an iconic rifle. Traditionally the Mk12 is chambered in 5.56 and is best suited to use the Black Hills 77gr ammunition. I wanted something a ...Mk 12 is an exact copy of the gas manifold on the Mk12 Mod 1 and Mk 18 Mod 1 Special Purpose Rifles used by the U.S. Army and Navy. Made from 416 stainless steel with a tough, wear-resistant black oxide finish, and fits barrels with .750" O.D. Mk 12 Style in natural stainless, has the same low profile as the Mk12 Mod 1 gas manifold, and fits ...Grid Defense / Ghost Firearms Review. I just passed the two year mark with an 10.5" 300BLK MLOK pistol kit from Grid Defense / Ghost Firearms. This also marked 2,000 rounds (my poor wallet) through the rifle, mostly suppressed, without issue. With the abundance of PSA and Aero deals, I really felt I was rolling the dice when I took a chance ...DPMS 308 MK12 Mod 0 GenIII DIY Kit w/PRI Rear Sight... 03-308-MKG3-DF-AR-DE. Price $932.00. ... MK 12 Mod H Gen III DIY Kit w/PRI Black Front &... 05-MKH-PRB-RRB-DE. Price $915.00. This kit is for the do it yourself builds we just provide you with all the components to build the Mark 12 Mod H. The kit is composed of PRI Gen III rifle length ...In this video I talk about how I camouflaged my MK12 using Rustoleum spray paint. This is super easy to do and required very little prep work. You can easy b...I guess that's how I define "most correct". But I do understand that "correct" is a pretty broad term with the mk18. Jon9243 • 1 yr. ago. Well if your specifically going for a mk18 mod 1 would mean you are building a navy clone. But also the items used changed over the course of employment of these weapons.Mk12 Holland 16" Barrel Kit For Mod H Rifles. $785.00. Potomac Armory. Mk12 SPR 18" barrel kit for Mod 0 and Mod 1 rifles. $465.00 - $806.00. Potomac Armory. Mk12 Mod 1 Near Clone Upper Receiver Group, complete from Potomac Armory Allen Engineering. Allen Engineering AEM-5 "Ops Inc. #12" Mk12 SPR collar and adapter (long) ...Ace M4/MK12 Mod H SOCOM Stock with Buffer Tube Only. $197.99 $219.99. Ace. Quick View Options. Magpul MOE® SL-M Carbine Stock - Mil-Spec. $42.70 $44.95. Magpul. Quick View Options. Magpul PRS® Lite AR15/AR10 Stock. $113.94 $119.95. Magpul. Out of stock. Quick View Out of stock. Out of stock. PRI-Precision Reflex AR-15 A2 Buttstock Assembly.I've seen a lot about shooting 5.56 out of a .223 barrel but less about .223 out of a 5.56 barrel. Just want to confirm this is ok before I order my upper. Also, dedicated .223 barrels are extremely rare in AR-15's. It's most commonly found in .223 bolt guns. What this fella said.May 25, 2022 · The 5.56mm Mk12 Mod 0 SPR was designed to provide both precision and support fire for US Special Forces. It was successfully fielded in both Afghanistan and Iraq. April 27, 2021 By David M. Fortier, Senior Field Editor. The Mk12 SPR series is an interesting example of how much can be done with the basic AR-15 design. Honestly, I'd have to tally it all up. The can was 900 w stamp, scope was about the same. A few hundred for the red dot, same for the rail, and the rest is basically just an ar. Toss in another couple hundred for the bipod and extra cost for the barrel, etc. It's almost all off the shelf, although I did get some stuff second hand to keep ...Mk12 Mod 0 vs Mod H. Two Mk12 clone inspired builds ready to send some mk262s down range. The both builds utilize The PRI 12.5" rails and AEM muzzle brake and collar. 16" barrel on the mod H? Nice, I just picked up my PRI mod 0 after ordering it back in November.There's no real reason in my mind to run plastic or drop in style rails on a AR platform rifle at this point unless you specifically want them. Like nuffin_stuff posted the Mk12 is a 18" barrel with a 12" rail. This is true for the Mod 1 as well that uses a KAC 12" picatinny rail. Below is my Mk12 Mod 1 build.The AEM5 is the direct fit replacement for your Mk12 SPR. The AEM5 attaches to the weapon via a mount and a collar that goes over the barrel for alignment. The suppressor mounts via threads on the outside of the mount centering on the adapter fitting. A 20 degree taper on the adapter locks the silencer onto the barrel.The Mk12 Mod1 uses the Knights Armament Company (KAC) M4 Match Free-Floating RAS (Rail Adapter System). The Mk12 Mod0 uses the PRI Gen III Handguard, and the addition of the PRI SPR Straight Top Rail. Sights. Mk12 Mod1 uses the KAC rail forend flip-up front sight and the KAC 600 meter flip-up rear. Mk12 Mod0 uses the PRI flip-up front sight (in ...If you’re a gamer, you know that mod menus can make your gaming experience even more enjoyable. Mod menus are special modifications that allow you to customize your game and add extra features. Unfortunately, they can be expensive and hard ...Designed with serious firearm aficionados in mind, the PTR 91 GIR boasts impressive specifications. With an overall length of 40.5", an 18" barrel, and a weight of 9.5 lbs, it brings together durability and convenience. It operates on a roller-delayed blowback system and a semi-automatic action, accepting .308 and 7.62x51mm calibers.SOCOM in its early days allowed SOPMOD modifications to the M4A1 and then the Mk12 Mod H and Mk18 with the ACE stock, as well as other stocks, like the LMT and B5 SOPMOD stocks. The ACE Gen 4 M4 SOCOM Stock features an integral buffer tube, which allows adjustable length of pull in five 1/2" increments, and is approximately 6 times stronger ...BRAVO COMPANY MK12 MOD 0 18IN 5.56X45MM NATO BLACK 30+1RD Quantity Discount Price . Add To Favorite MK12 Mod 0 18in 5.56x45mm NATO Black 30+1Rd ... It was eventually type classified by the Navy as the Mk 12, though the Army also uses this designation FFL Restriction You must be 18 years of age or older to purchase rifles and shotguns, and 21 or ...MK 12 Mod 0 GenII DIY Kit w/PRI Rear sight & PEQ II... 05-MKG2-PR-PR-DE. $1,041.00. This kit is for the do it yourself builds we just provide you with all the components to build the Mark 12 Mod 0. The kit is composed of PRI Gen III rifle length Black forearm, Gen III SPR Straight top rail, flip up front sight gas block A2 post, Gas Buster ...MK12 Mod 0 SPR Collar $ 49.00. Add to cart. Search for: SUPPRESSORS. AEM4; AEM5; AEM5-30; MOUNTS; SHOP; DEALERS; CONTACT; Login. Username or email address * Password * Remember me Log in. Lost your password? Register. Email address * A link to set a new password will be sent to your email address.The SEAL recce would be a mode defined build with KAC FF RAS and optics/accessories often seen on the Mk12. SPR would be a 18” rifle length gas system with the Mk12 being the obvious example. The recce concept is perhaps my favorite build or genre if you will. It really suits itself as a “do all” rifle.The United States Navy Mk 12 MOD 0/1/H Special Purpose Rifle is a designated marksman rifle that was in service with United States Special Operations Forces in the designated marksman role until 2017, also designed to be shorter than standard weapons. SPR initially stood for Special Purpose Receiver as it referred to an add-on upper receiver assembly , but that nomenclature changed to Special ...i bought from them before, 16inch upper 556 nato FDE, once received barrel didn't seem to be center of FF handguard. so contacted them and they were able to pay for shipping it back and have it fixed. on the 2nd time it came back they switched out my barrel with a 1:8 twist which i wanted was a 1:7 twist.Our 18” MK12 barrel, chambered in 5.56mm NATO, is known for its use by US Special Operations. It’s constructed from a proprietary Stainless Steel blend with the chamber created during the Cold Hammer Forging process, which ensures the most precise alignment of the chamber to the bore possible. These barrels, some of the most …Product Overview. The PRI Mark 12 Mod 0 SPR Upper Receiver Assembly is a ready to shoot 5.56 upper, equipped with a 18" Douglas 416 stainless steel barrel with a fitted bolt, and commercial bolt carrier. The Mark 12 Mod 0 SPR has a flat-top picatinny receiver, PRI flip up front gas block front sight/rear sight, and rifle length gas tube.In great shape very minimal handling marks on the knobs. Illumination works, and it tracks like it should. Glass is clean, no scratches. Had it on my mk12 and swapped to a x24 so no longer need it. Comes with the MK machining throw lever. No box. $1420 1350 shipped and insured conus...Douglas 5.56MM Barrel 16" - 1-7 Twist, MK12 Mod H. $504.00. Precision Reflex. Out of stock. Quick View Out of stock. Out of stock. PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist, FDE. Precision Reflex. Out of stock. Quick View Out of stock. Out of stock. Allen Engineering MK12 Mod 0 Threaded Muzzle Brake and Collar, 5.56/.22 Cal.I have a Mod H. From my experience, expect a really heavy gun. Accuracy will be up to which barrel you use. I would sacrifice not being clone correct and use a BCM upper (instead of Colt) for guarantee good accuracy. Get The AEM5 can first while you decide how to go about putting your Mk12 together. Personally, I feel that MOD H is the …They confirmed that it was getting stuck on the barrel portion of the feed ramps, apparently due to M193's difference in shape to M855. I told Criterion about this and they offered me a new barrel, but I asked them to RMA it. I made sure this to time to emphasize that it only happens with M193, and they would need to use M193 to reproduce the ...About 200 of them were sent back to Hayes Diversified Technologies back around 04 for the diesel engine conversion (M1030M1). It's also street legal and plated! The company based these off the Gen 1 KLR 650. Also has a blackout light switch to kill the lights and activate the front and rear IR lights.Sig Romeo5 Compact Red Dot Sight https://amzn.to/2KLPDy8Sig Bravo3 Sight https://amzn.to/2LpZ46SAXIL Earmuffs Tactical https://amzn.to/2PIrFJVFoam Rifle and ...There are 3 rough iterations of the Mod H: 1)First handful were built at SOTIC armory directly by MSG Holland and another gentleman, using COTS parts ordered from Brownells etc. The one we can see closely had a black Colt Keyhole forged upper, black PRI Gen III handguard rifle length, and a black PRI Recce Rail.The only pros are if you like the aesthetics. Pretty much anyone who's used tucked suppressors agree its all downside. Gets hot, can't use the mlok slots, and can't use certain QD mounts for suppressors. cons: looks ass; handguard inner diameter has to be huge; handguard gets hot. In addition to the 100% correct comments about heat and the size ...KAC BUIS (600m rear) AN/PEQ-2 Laser. Harris Bipod with QD Rail adaptor. KAC foregrip and rail covers. Butler creek scope cover with inset killflash. Docter Micro Red Dot Sight. Hogue overmold pistol grip. A shit ton of Krylon. A real Mk12 Mod 1 isn't just an M4 or M16 with a scope on it and a fancy rail… it's a custom built weapon, to get ...The Douglas 16" on my mod H shoots lights freaking out. Can't say the same about the BA (Ballistic Advantage) on my mod 1. Gonna have to rectify that. ... NSW/Mod H/Mod 1 mk12 builds all use Douglas barrels, all 3 shoot great with IMI razorcore. teamjawbox. Member Joined Mar 2013; Posts 1169; EE 100% (140) TX, USA ...SPECS: Material: 416R Stainless, Matte finish. Barrel extension: M4 feed ramps. Chamber: optimized for use with MK262 (Black Hills 77gr equivalent) Twist: 1 in 7 right hand. Contour: for use with OPS inc. Brake and Collar. Length: 18 in and threaded 1/2x28 for use with most common muzzle devices. Weight: 2 lbs 6.3 oz. $504.00.