TacFire MAR008-750GB Features The TacFire Assembled .750 Low Profile Gas Block Carbine Length Gas Tube supplies both halves of a carbine length AR gas system matched together as a single assembly which takes the guesswork out of pairing a compatible block and tube. The .750 inch inside diameter is sized to clamp directly onto a .750 gas journal barrel a common dimension on many carbine and midlength AR builds. Its low profile design sits below standard handguard rail height letting the block disappear under a free-float handguard rather than protruding into the shooter s grip area. This flush fit matters on modern builds where a bulky gas block can interfere with rail-mounted accessories or a consistent hand position. The carbine length gas tube included in the assembly is cut and bent to the correct carbine system dimensions so gas timing stays correct for reliable cycling of the bolt carrier group. Shipping the block and tube together as a matched assembled unit means a builder is not left guessing whether a separately sourced tube will align and seat properly with the block. Finished in black to match the vast majority of AR builds the assembly drops onto a carbine length upper without requiring any additional finish matching. For anyone building or repairing a carbine length AR-15 gas system the TacFire assembled gas block and tube offers a straightforward correctly matched solution. TacFire MAR008-750GB Specifications Manufacturer: TacFire Model: MAR008-750GB Type: Gas Block and Tube Assembly Gas Block Diameter: .750 Gas System Length: Carbine Length Color: Black Quantity: 1 Available At: GrabAGun