The silencer-optimized Raptor-SD features a ported shaft designed to redirect gasses down and forward, away from the shooter s face when shooting suppressed. Its ambidextrous design allows rapid palm "blading" or finger-thumb charging of the weapon, ensuring the motion is fluid and fast from either strong or support side. The Raptor-SD is compatible with most AR15/M16-pattern rifles. Designed and manufactured in the USA Machined from 7075-T6 aluminum. MILSPEC Type 3 Hard Coat Anodized Finish w/ Cerakote