KNS Precision

Adjustable Gas Piston

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KNS Precision Adjustable Gas Piston


Finally, a drop-in solution for taming the notoriously over-gassed AK platform. The patent-pending KNS Ak Adjustable Gas Piston is a replacement for the factory gas piston head that attaches to the bolt carrier in about 10 minutes with no major gunsmithing or permanent modification. 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. Made in the USA.


A good rule of thumb to determine if our piston will be useful, is if your rifle ejects the steel/brass over 15 feet. This can signify excess gas pushing the carrier back at a higher velocity and pressure than is needed for effective operation. This causes more recoil, more wear and tear, and less controllability. There is no need to remove or replace your gas block for adjustability, just change the piston and shoot.


Not sure which piston will fit your rifle? Refer to the handy Measurement Guide located in the photo gallery to measure Hole Distance and Working Length of your current piston. From there, match it up with the correct KNS Adjustable Gas Piston.


**A small percentage if commercial spec firearms have the piston welded to the carrier, instead of the correct rivet. We recommend purchasing a new carrier for easier installation.**


Please note that changing out hand fit, factory parts with aftermarket parts & accessories may require hand fitting by the end user. For customers that are not equipped with basic tools or experience with hand fitting parts, we recommend seeking out the assistance of a competent gunsmith. Please feel free to submit any questions to before placing your order. Thank you for your business!

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