| Platform | Mk4 |
| Caliber | .22 LR |
| Barrel Length | 16.1 |
| Barrel Twist | 1:16 |
| Barrel Contour | M4 |
| Barrel Material | 4140CM, SBN |
| Barrel Twist | 1:16 |
| Muzzle Thread | 1/2 X 28 |
| Gas Port Location | N/A |
| Gas Block | N/A |
| Finish | SBN |
Due to high demand and supply chain issues affecting many industries, some of our parts and accessories may be on backorder and have an extended lead time. Items currently on backorder can still be purchased and can typically be shipped within 25 business days.
Barrel and Collar Kit, 16.1" M4, 22LR
Perfect for building your custom dedicated 22LR AR15 upper group. Also Includes a barrel collar to replace the chamber adapter on your 22AR Conversion.