Guntec .750 Diameter Low Profile Gas Block Features The Guntec USA Low Profile Gas Block is constructed from steel for the strength and heat resistance needed to withstand the high pressure gas cycling through an AR-15 s gas system. Its .750 diameter fits standard gas block journals and the short version profile keeps the block compact enough to tuck beneath most free float handguards without interference. A matte finish gives the block a clean uniform look that blends in with other mil-spec finished components on a build. The updated design reflects a newer engineering pass over earlier Guntec gas blocks intended to improve fit and reliability. Three set screws secure the gas block firmly to the barrel helping keep it from shifting or loosening under the repeated thermal cycling and vibration of firing. A roll pin is included with the block simplifying installation for builders assembling or upgrading their upper receiver. Because the block is low profile it allows for the use of modern free float handguards while keeping the gas system protected and out of the way. Made in the USA this steel gas block gives AR-15 builders a durable properly dimensioned component for regulating gas flow to the bolt carrier group. Guntec .750 Diameter Low Profile Gas Block Specifications Manufacturer: GunTec Model: .750 Diameter Low Profile Gas Block Material: Steel Color: Matte Country of Origin: Made in the USA Available At: GrabAGun