Description Insert the one piece assembly and install the supplied pins. No screws to adjust or worry about coming loose. Full strength rocket wire springs for fast lock-time and reliable discharge with factory or military ammo. Tolerances of +/- .001 inch for all engagement surfaces. Made from 8620 alloy steel and S7 tool steel . Factory tuned for a better than average match grade trigger pull with minimum take-up and over-travel. Fits Mil-Spec receivers. Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.