Brownells 75th Anniversary - A Shooting Heritage
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The CMMG .22LR Barrel and Bolt kit provides everything you need to convert your existing upper to a dedicated .22LR. Just purchase a magazine and you are ready to go. For best performance use a round style hammer as notched hammers can cause function issues and 36 grain plated nose bullets have proven to be the best choice for function.

  • 16.1” Barrel
  • .22 Long Rifle
  • Barrel and Bolt combo

CMMG - .22LR BARREL & BOLT GROUP KIT M4

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Cartridge: 22 Long Rifle

Length: 16.1"