The CMC AK2.0 Elite Trigger utilizes the most advanced manufacturing and quality control techniques. CMC's critical sear engagement surfaces have a proprietary machining process that renders superior surface finish and dimensional control. As compared to their competition, the techniques used to establish a 1-2 RMS surface finish as opposed to EDMing which leaves a pitty 32 RMS, compared to a mirror which is 0 RMS. Best of all, the CMC AK 2.0 Elite Trigger is proudly 100% Made in the Great State of Texas, and comes with CMC's Satisfaction Guarantee and Lifetime Warranty. FEATURES Made from 8620 Alloy Steel, S-7 Tool Steel, and 7075-T6 aircraft grade Aluminum Factory preset and non-user adjustable 2.5lb, 3.5lb, or 4.5lb Pull Weight Ultra-crisp trigger Glass-smooth break Minimal lock time Positive trigger reset Hand assembled; hand tested Totally self-contained one-piece assembly Easy to install