Proto Barrel Backs are manufactured with premium 6061-T6 high-grade aluminum and honed to .690 and 8 micron finish.Change up color and style with a new Proto barrel back.
| Manufacturer |
Proto |
| Barrel Type |
N/A |
| Supported Marker |
N/A |
| Color |
Black |
| Bore Size |
N/A |
| Barrel Length |
N/A |