CMC’s self-contained AR-15 drop-in triggers deliver reliable, consistent, tactical-grade performance without compromising quality. A screwless, nonadjustable design matched with a patented, one-piece assembly guarantees fine-tune functioning and quick, easy installation. Full-strength rocket wire springs offer fast lock time and reliable discharge with factory or military ammo. Clean, crisp trigger release with a factory-tuned 3-1/2-lb. trigger-pull weight. ±.001" tolerance for every engagement surface. Contained in a high-grade 410 stainless steel housing. Designed to fit any lower receiver manufactured to military specifications. Made in USA. Available: Flat, Curved.