Troy Low Profile Gas Block - Pro Grade SS SGAS-A4L-00BT-00. 750 gas block seat. The Troy Low Profile Pre-hardened Steel Gas Block is machined from 4140 pre-hardened steel finished with MIL-STD Manganese Phosphate. Specifications for Troy Low Profile...
Troy Low Profile Gas Block - Pro Grade SS SGAS-A4L-00BT-00. 750 gas block seat. The Troy Low Profile Pre-hardened Steel Gas Block is machined from 4140 pre-hardened steel finished with MIL-STD Manganese Phosphate. Specifications for Troy Low Profile...