BCM® Mk 12 Mod 4X-Bravo (KMR-A15)

MSRP: $1,321.86
(You save $220.00 )
(8 reviews) Write a Review
M4 Feed Ramp Barrel Extension
Stock Status:

Out of stock

Features included in basic price:
BCM® KMR Alpha 15"
BCM® SS410 18" Stainless Barrel, Ionbond Black DLC
Rifle Length Gas System
Pinned Low Profile Gas Block
BCM® Bolt Carrier Group (HPT/MPI), auto
Optional Features
Muzzle Options: A2 Flash Hider, KAC, PWS, Vltor Mod 1, BCM®™ Mod 0 Comp
Charging Handle Options: No Charging Handle, BCMGUNFIGHTER™ Mod 3B (Large Latch), BCMGUNFIGHTER™ Mod 4B (Medium Latch), PRI Gas Buster (w/ Combat Latch)
The United States Navy Mark 12 Mod 0/1 Special Purpose Rifle (SPR) is a rifle that has been in service with the United States special forces in Operation Enduring Freedom and Operation Iraqi Freedom. SPR initially stood for Special Purpose Receiver, but that nomenclature seems to have disappeared as the weapon became a stand alone weapon system, and not just an add on upper as part of proposed SOPMOD upgrades. SPR now means Special Purpose Rifle. It was eventually type classified by the Navy as the Mk 12, though the Army also uses this designation.
This weapon system, used by Special Forces units of both the US Army and US Navy, is a heavily modified deviation from the familiar AR15/M16 line of infantry weapons, and thus is chambered for NATO standard 5.56 x 45 mm caliber ammunition. It serves a light sniper/designated marksman role. The SPR was originally proposed by Mark Westrom, currently president of Armalite, while at the Rock Island Arsenal. The SPR program was an outgrowth of the desire by both US Army and Navy special forces for a rifle with greater effective range than an M4 type Carbine but still shorter in length than a standard issue M16A2/A4. The SPR program appears to have grown out of both the SOPMOD Block II program, and the U.S. Navy SEALs 'Recon Rifle' (a 16" flat-topped AR-15/M16 Carbine).
***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit www.p65warnings.ca.gov.***

8 Reviews

  • 5
    sub moa

    I purchased this complete upper two months ago and couldn't be more impressed. I also bought a BCM lower from Ranier as BCM had none in stock. Fit and finish are superb. I have only fed it American Eagle 223 55gn for barrel break in then switched to some "budget" PMC xtac match 77gn otm to get an idea of the rifle's accuracy potential. First/only group measured 3/4" at 100yds. Unfortunately I had to quit for the day after that. This was off sandbags sitting on a relatively unstable bench. I look forward to testing this and other ammunition from the concrete bench at my range. Recoil was minimal (even for an AR). I'm sure the rifle length gas contributed to that. Thank you BCM.

  • 5
    Great upper for the price.

    The upper shoots really well, have a viper pst 1-4 on top of it and with 55gr pmc FMJ keeps a group of 1 moa at 100yds and holds a 1/2 moa with 75gr bthp Hornady. Loving the upper

  • 5
    Amazing upper!

    Amazing shooter! Shoots one ragged hole at 100 yards. Runs flawlessly.

  • 5
    A mighty fine spr upper

    Very pleased with this upper, fast shipping, clean our of the box, zeroed in no time. VERY accurate barrel and you can't beat the keymod rail.

  • 5

    I have always wanted to put together a MK12 and there was no other brand I wanted than BCM. I can confidently say that I'm not disappointed, not only is this product well manufactured but it performs great on paper too! Thanks for such an amazing product!

  • 5

    This fully built upper arrived quickly and well packaged. Everything was assembled good, and there wasn't a ludicrous amount of extra lube.

    It is very accurate.

  • 5
    Smooth shooting

    Nice fit and finish, I Have it on a spikes lower with an st-t2 buffer. Its operates flawlessly, 200 rounds through it and am shooting sub moa with iron sights at 50 yards with target range ammo.

  • 5
    Money well spent

    amazing complete upper! I did a lot of research before I finally pulled the trigger, very happy with my decision. The build quality and attention to detail is second to none and the upper performs as advertised, extremely light with the KMR hand guard.