XM21 Bushmaster




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The XM21 features our innovative XM21 flat top forged receiver with integrated modern optics scope rail and a 20″ 450 Bushmaster barrel. This design takes the M14 platform to a higher level of optics performance. The XM21 receiver includes an ultra-low scope rail milled right into the receiver, directly along the center-line of the barrel.

The barrel features a 20” heavy profile, significantly reducing barrel whip. The muzzle features a 11/16”-24 threaded brake. The tactical stock features an M-Lok for-end, adjustable cheek riser and adjustable length of pull. The rifle comes standard with a Bula Defense Muzzle Brake.

Features: Bula Defense forged XM21 receiver with MIL-SPEC components; gas operated, piston driven semi-automatic action; and one (1) 5 round box magazine.

  • Caliber:450 Bushmaster
  • Action:Gas operated, piston driven semi-automatic
  • Sights:Integrated modern optics scope rail, no iron sights
  • Stock:Composite Tactical
  • Finish:Manganese Phosphate
  • Barrel Length:20” Heavy Profile
  • Twist:1-24 RH
  • Grooves:4
  • Overall Length:Adjustable
  • Weight:16 lbs.
  • Length of Pull:Adjustable
  • Price:$2,250.00
  • Limited Lifetime Warranty

Additional information

Weight 16 lbs
Dimensions 48 × 13 × 5 in

Requires an FFL


Right-handed, Left-handed (+$150)


Walnut, Folding (+150), Tactical (+$200)


Composite, Wood Handguard (+$100)