Don’t let too much gas ruin your day at the range with the KNS Precision® Adjustable Gas Piston System for Bulgarian AK-74. This drop-in gas piston system is designed to tame the notoriously-overgassed AK platform and is a replacement for the AK’s piston head that attaches to the bolt carrier. Featuring corrosion-resistant stainless steel construction with a durable nitride finish, this piston system is designed for long-lasting use and durable, low-friction, easy-to-clean operation. What’s more, this gas piston system is easily installed in about 10 minutes with no major gunsmithing or permanent modification required and gives the user a wide range of adjustments for suppressed and unsuppressed use, as well as a variety of different kinds of ammo. Counts as 922r Compliant Part.