CMMG 22LR M4 AR-15 Barrel and Collar - 16"

Manufactured by CMMG
SKU: 22D7C4A
MPN: 22D7C4A
Manufactured by CMMG
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Are you tired of spending large amounts of money on 5.56 ammo just to have fun at the range? This 4140 Chrome Moly Steel barrel fits into Mil-Spec AR-15 upper receivers so you can shoot all day with little expense. All that is needed to finish the conversion is this barrel, a CMMG 22lr Arc bolt group, and a CMMG 22Arc magazine. This barrel also comes with a collar that lets you replace the chamber adapter that comes on the 22lr Arc bolt group. The sporting chamber offers more reliable function than the standard chamber. It is fully nitride inside and out to give it high corrosion resistance and longevity. This conversion gives you the benefit of the modularity of the AR-15 platform and ergonomics while saving money on ammo. It is also a great option for training people to use the AR-15 weapon system before moving them to the larger .223 cartridge.

  • Easily convert your AR-15 to 22lr to save money on ammo
  • Attaches like a standard AR-15 barrel
  • Great for training people on how the AR-15 weapon system functions
  • Made from high quality 4140 Chrome Moly Steel
  • Salt bath nitride finish
  • Threaded 1/2x28 so you can attach standard .223/5.56 muzzle devices

A leading manufacturer of AR-15 rifles, kits, and accessories, CMMG Inc. was established in 2002. Constantly pushing the edge, CMMG strives to develop and improve bringing you a product lineup that is second to none.
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Barrel CoatingSalt Bath Nitride
Barrel ContourM4
Barrel Length16.1
Barrel LiningSalt Bath Nitride
Barrel Material4140 Chrome Moly Steel
Caliber Gauge.22 LR
Feed RampsSingle
Gas System LengthCarbine
Thread Pattern1/2 X 28
Twist Rate1:16
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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