Ultradyne Quantum Gas Block Adjustable .875in

Ultradyne Quantum Gas Block Adjustable .875in. Having a gas block adjusted precisely allows the bolt carrier group to cycle only hard enough to extract and feed the new round into the chamber without hammering hard against the receiver extension. The adjustability can easily improve the performance of any rifle but it is especially important for the competitive shooter or when using hotter ammo or a suppressor which sends significantly more gas rearward. The UD Gas Block allows for a smoother cl