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Rock River Arms LAR-15M A4 .450 Bushmaster Rifle


Rock River Arms makes some of the best AR-15 rifles in the world. After exhaustive testing, both the FBI and DEA turned to Rock River Arms for their patrol rifle contracts. If you want a rifle rugged enough for the top federal law enforcement agencies in America, choose the LAR-15.

Perfect for hog hunting, home defense and competition, the LAR-15M Mid-Length A4 in .450 Bushmaster packs a lot of punch in a lightweight package. Featuring a stainless steel 16″ cryogenically treated barrel you will get long life and fantastic accuracy out of this rifle. It has a RRA light weight freefloat M-LOK compatible handguard, a RRA two stage trigger with an oversized winter trigger guard and a RRA overmolded A2 grip to further enhance easy familiar operations. Built with RRA’s forged aluminum receivers that includes an optics ready A4 flat top upper, this is a rock solid platform that you can count on shot after shot. The LAR-15M Mid-Length A4 Rifle from Rock River Arms is an attractive and exceedingly effective rifle suitable for hunting, home defense or competition shooting.


  • UPC: 842834123407
  • Model #: 450B1261
  • Caliber: .450 Bushmaster
  • Barrel: 16″¬†Stainless Steel Cryo Treated
  • Twist: 1:24″
  • RRA Operator A2 stock
  • RRA Overmolded A2 grip
  • Overall length: 37.5″
  • Weight: 6.8 lbs
  • Handguard: RRA 13″ Lightweight Free Float M-LOK Compatible
  • Stock: Collapsible
  • 7 Round Magazine
  • Threaded 5/8×32 TPI with RRA Operator Muzzle Brake
  • Low Profile Gas Block with Mid-Length Gas System
  • Forged Aluminum RRA LAR-15M Lower Receiver
  • Forged Aluminum A4 Flat Top Upper Receiver
  • RRA Two Stage Trigger with Winter Trigger Guard
  • RRA Overmolded A2 Pistol Grip
  • RRA Operator CAR Stock
  • Made In The USA


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