Standard Super Gas Block Nitride - The bore of the SGB is machined to closely fit around .750" diameter mounting bosses found on most M4 Carbines and AR-15 rifles.
| Manufacturer | Geissele
|
| Model | 05-231N
|
| UPC | 854014005274
|
| Unit/Measure | ea
|
| Stock | 0
|
| Availability | Out of stock |