BCM® Mk 12 Mod 1R-Bravo (KAC/RAS)

MSRP: $1,551.00
(You save $138.60 )
(13 reviews) Write a Review
M4 Feed Ramp Barrel Extension
Stock Status:

Out of stock

Features included in basic price:
KAC RAS 12.0 Free Float Handguard
BCM® SS410 18" Barrel, IonBond BLACK
Rifle Length Gas System
BCM® Bolt Carrier Group (HPT/MPI), auto
Pinned Low Profile Gas Block
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.***

13 Reviews

  • 5
    Great accuracy

    Posted by Aaron on Jul 13th 2020

    I bought a factory upper used and it is a shooter
    BH 77gr OTM and SSA-E got me .43 moa 5 shot group. My friend with a bolt gun was pissed.

  • 5
    BCM mk12 mod 1R-bravo KAC/RAS

    Posted by Arthur Ferguson on Jun 4th 2019

    Top notch quality. The order was filled quickly and delivery was prompt. Thanks

  • 5
    Great Product!

    Posted by Shane on Apr 10th 2019

    Ordered the Mk12 mod 1 upper from BCM, it took some time to process due to the “cost” but I understand. The upper did arrive on time and in a timely manner. Once set up on a lower I had and a good optic I took it out to zero. Not only was it the fastest rifle to zero I’ve ever had, it shoots lights out from the first round. It’s had about 400 rounds put through it now and with its favorite flavor of 77grain OTM it’ll put down 1/2 inch groups all day @100 yards easy, with bags and a controlled trigger finger it’ll do even better. Zero malfunctions whatsoever and did I mention it was accurate? My only real complaint would have to be that when it arrived it had enough oil on it to oil just about every other gun in the safe with what I wiped off the Upper. Bottom line is if you purchase this up you will NOT be disappointed. Great job BCM!!!

  • 5
    BCM Mk 12 Mod 1R-Bravo

    Posted by antoine truong on Apr 9th 2019

    Very satisfied with the quality of this upper.
    I like that the gas block is pinned .. gives me peace of mind that it won't ever move around.


  • 5
    Customer review

    Posted by Cade Coston on Apr 10th 2018

    Review body is empty

  • 5
    Excellent but....

    Posted by Lou Davila on Oct 27th 2017

    Love it but I could not believe I was unable to upgrade parts such as bolts or trigger. The upper itself is a piece or art.

  • 5
    Very satisfied

    Posted by Dustin Norton on Oct 13th 2016

    Bcm is the best for the money period just wish the hats were made in the USA

  • 5
    Mk12 goodness

    Posted by C.Salazar on Sep 22nd 2016

    Thanks for the upper again as always. Bcm is all I look for. Took it out with a viper pst 2.5-10. Some ar15 goodness right there. Purchased this with the a5 buffer with zero hiccups and great groups down range. Happy customer here. God bless u guys at bcm

  • 5
    Finally got one!

    Posted by Chad Mayes on Dec 6th 2015

    Been waiting a long time to get my hands on the mk12 upper. The product that showed up in a timely manner and the fit and finish to my rock river lar15 lower was perfect. Have the upper fitted with a night force nxs 2.5-10x42 and can't wait to get it out to the range!