Bore of the super gas block is machined to closefuly fit around 0.750 inch diameter mounting bosses found on most M4 carbines and AR-15 rifles.
| Manufacturer | Geissele
|
| Model | 05-231
|
| UPC | 05-231
|
| Unit/Measure | ea
|
| Stock | 0
|
| Availability | Out of stock |