| Caliber | .22 LR |
| Barrel Length | 4.5 |
| Barrel Twist | 1:16 |
| Barrel Contour | MT |
| Barrel Material | 4140CM, SBN |
| Barrel Twist | 1:16 |
| Muzzle Thread | 1/2 X 28 |
AR Parts Notice - State/local restrictions may apply in CT, DC, IL, MA, NJ, NY, or WA. Customers must review our Shipping Policy prior to ordering.
Barrel and Bolt Group Kit, 4.5" MT 4140CM, 22LR
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.
All CMMG products come with our Lifetime Quality Guarantee.
**All NFA rules apply** See linked CMMG Resource article for more information.