The Aero Precision .750 Low Profile Gas Block, along with our gas tubes, forms an efficient and reliable gas system for your AR-15 or AR-308 rifle build. It fits barrels with a .750 outer diameter and is constructed from 4140 hardened steel. You can choose between blocks with no Aero logo or the Aero 'A' logo. It comes with a nitride or phosphate coating and has a low profile for easy fitment. The set screws are made of steel 10-32 x 3/16 knurled cup point. This gas block is proudly made in the USA, though the roll pin is not included. Note: We don't recommend using red thread locker on the set screw threads. If you use thread locker, opt for the non-permanent type. It weighs 1.6 oz and is suitable for multi-platform use.


Using this Aero Precision gas block is easy. First, make sure your barrel has a .750 outer diameter as this gas block is designed to fit that size. Install it along with the gas tube to create a reliable gas system for your AR-15 or AR-308 rifle. When installing the set screws, don't use red thread locker on the threads. If you really need to use thread locker, go for the non - permanent kind. For maintenance, keep it clean. Wipe it down regularly to prevent dirt and debris from building up. Since it's made of 4140 hardened steel with a nitride or phosphate coating, it's quite durable, but proper care will ensure it lasts even longer. Remember, the roll pin is not included, so you'll need to get one separately if required.