AR-15 Caliber Conversions

Whether building your own AR-15 or purchasing an off the shelf AR-15 you will find they are available in a wide array of calibers.  Most calibers only require a few parts to shoot something other than 5.56mm.

7.62x39mm Conversion

  1. 7.62x39mm Bolt
  2. Barrel Chambered in 7.62x39mm
  3. 7.62x39mm Magazine
  4. 7.62x39mm Firing Pin
  5. Muzzle Break

5.45x39mm Conversion

  1. 5.45x39mm Bolt
  2. 5.45x39mm Barrel
  3. 5.45x39mm Magazine

.458 Socom

  1. Requires an upper modification
  2. Barrel Chambered in .458 SOCOM
  3. .458 Socom Bolt
  4. Straight tube gas block
  5. Muzzle Break

6.8 SPC

  1. Barrel Chambered in 6.8 SPC
  2. 6.8 SPC Bolt
  3. 6.8 SPC Magazine
  4. Muzzle Break

22LR Conversion

  1. 22LR Bolt Carrier Group
  2. 22LR Magazine

9mm Conversion

  1. 9mm Bolt Carrier
  2. 9mm Mag Block
  3. 9mm Buffer
  4. 9mm Magazine Compatible with Mag Block
  5. Hammer for some conversion kits
  6. Barrel Chambered in 9mm
  7. Muzzle Break

.45 ACP Conversion

  1. Complete upper Modified for .45 ACP
  2. Mag Block for .45 ACP Conversion
  3. Compatible magazines for mag block
  4. 300 AAC Blackout

    1. Barrel Chambered in 300 Blackout
    2. Muzzle break (5/8-24 TPI)

    50 Beowulf

    1. Complete Upper for 50 Beowulf
    2. Magazine for 50 Beowulf

    6.5 Grendel

    1. 6.5 Grendel bolt
    2. Barrel chambered in 6.5 Grendel
    3. Magazine for 6.5 Grendel
    4. Muzzle Break for 6.5 Grendel