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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).
 
BCM SPR Mk12 Upper Group Features
  • 18" BCM SS410™ Barrel (HPT/MPI)
  • 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
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BCM SPR Mk 12 Mod 0 Bravo (BLACK)
BCM Mk 12 Mod 0-Bravo (PRI Black)
List Price: $1,425.00
Our Price: $1,299.00
(Out of Stock)

Barreled Upper Receiver Group for your AR15, M16, M4.
BCM SPR Mk 12 Mod 0 Bravo FLAT DARK EARTH
BCM Mk 12 Mod 0-Bravo (PRI FDE)
List Price: $1,425.00
Our Price: $1,299.00
(Out of Stock)

Barreled Upper Receiver Group for your AR15, M16, M4.
BCM SPR Mk 12 Mod 0 Bravo (Natural)
BCM Mk 12 Mod 0-Bravo (PRI Natural)
List Price: $1,355.00
Our Price: $1,189.00
(Out of Stock)

Barreled Upper Receiver Group for your AR15, M16, M4.
BCM SPR Mk 12 Mod Bravo 1R (KAC RAS)
BCM Mk 12 Mod 1R-Bravo (KAC/RAS)
List Price: $1,385.00
Our Price: $1,259.00
(Out of Stock)

Barreled Upper Receiver Group for your AR15, M16, M4.
BCM SPR Mk 12 Mod Bravo2
BCM Mk 12 Mod 2-Bravo (LT12)
List Price: $1,325.00
Our Price: $1,199.00
(Out of Stock)

Barreled Upper Receiver Group for your AR15, M16, M4.
BCM SPR Mk 12 Mod Bravo2X
BCM Mk 12 Mod 2X-Bravo (LT13)
List Price: $1,355.00
Our Price: $1,229.00
(Out of Stock)

Barreled Upper Receiver Group for your AR15, M16, M4.
BCM SPR Mk 12 Mod Bravo2
BCM Mk 12 Mod 3-Bravo (DD12)
List Price: $1,325.00
Our Price: $1,199.00
(Out of Stock)

Barreled Upper Receiver Group for your AR15, M16, M4.
BCM SPR Mk 12 Mod Bravo3X
BCM Mk 12 Mod 3X-Bravo (DD14)
List Price: $1,355.00
Our Price: $1,229.00
(Out of Stock)

Barreled Upper Receiver Group for your AR15, M16, M4.