There are many advantages of Boss without a muzzle brake feature. It has a 1 piece, no hole accessory that is designed to fit only Bar MK II's and A-Bolt II's previously factory fitted with Boss. The CR stands for conventional recoil and gives the shooter the option of shooting the BOSS system with standard recoil and muzzle blast.
| Attribute | Value |
| Type | Boss CR |
| Model | A-Bolt |
| Size | 223Rem/223WSSM/243WSSM/25WSSM/22-250Rem/243Win |
| Material | Steel |
| Finish | Black Gloss |
| Manufacturer Part Number | 1140011 |
