CMMG Low Profile Gas Block .750 Inside Diameter In stock at Eden Prairie store. Available today! $39.95 MSRP Price: $38.95 Description Details Reviews Shipping info .750" Low profile gas block. Includes installation screws. 4140 Chrome Moly Steel Low Profile Includes Installation Screws UPC: 852005002622Manufacturer: CMMGModel: 55DA38DCategory: PartsOtherMisc AR-15 PartsStock: 2Unit/Measure: ea This item may be shipped directly to your home address, unless you live in a restricted state.