Finally, a drop-in solution for taming the notoriously-overgassed AK platform. The patented KNS AK Adjustable Gas Piston is a replacement for the AK's piston head that attaches to the bolt carrier in about 10 minutes with no major gunsmithing or permanent modification required. The user is granted an extremely wide range of gas adjustment for suppressed and unsuppressed use, as well as a variety of different kinds of ammunition. Features: Updated Mod 2 Collar Tool-Free Adjustment Reduces Recoil Tune almost any AK for suppressed use Decrease cyclic rate for full-auto fire US-made 922r Compliance Part Piston head assembly made from corrosion-resistant stainless steel All surface parts nitrided for durable, low-friction, & easily-cleaned operation #html-body [data-pb-style="62DF828A6793A"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF828A67947"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}