Gas Block, Steel, Compression, with Top Picatinny Rail, .875
Exclusive Fulton ARmory Design, Compression Fit so it Can't Work Loose
Solid Steel Machined from Solid Billet, Parkerized with Mil-Spec Manganese Phosphate
Designed For Standard AR-15 Fixed Detachable Front Sights
Rail Height .9125" From Center of Bore