| Platform | Mk4, Mk57 |
| Caliber | 5.7x28mm |
| Operating System | Radial Delayed Blowback |
| Barrel Length | 16.1 |
| Barrel Twist | 1:9 |
| Barrel Contour | MT |
| Barrel Material | 4140CM, SBN |
| Barrel Twist | 1:9 |
| Muzzle Thread | 1/2 x 28 |
| Gas Port Location | N/A |
| Gas Block | N/A |
| Hand Guard | CMMG EML15 M-LOK |
| Finish | Cerakote |
| Stock / Brace | CMMG RipStock |
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.
Radial Delayed Blowback Rifle Conversion Kit, 5.7x28MM
Convert your 5.7x28mm BANSHEETM from pistol to carbine with the CMMG® Radial Delayed Blowback Rifle Conversion Kit. The 15" EML Handguard and RipStock are available in six Cerakote color options to best match your firearm. Barrel is compatible with your existing 5.7x28mm Radial Delayed Blowback bolt carrier group.
Kit Includes:
- 16.1" 5.7x28mm Barrel
- Barrel Nut
- CMMG EML15 Handguard (Choice of Cerakote color)
- CMMG RipStock (Choice of Cerakote color)