BCM Enhanced Lower Parts Kit for your AR15 Lower Receiver This kit includes all the Mil-Spec quality components you have come to expect from BCM, along with some fantastic upgrades to include;  BCM PNT  Trigger Assembly  BCM Pistol Grip, Mod 3  BCM Enhanced Trigger Guard In a commercial market flooded with imported and low quality Mil-Spec imitations, you can trust that BCM parts are made in the USA and to the highest standards. Please look at the information below. BCM PNT  Trigger Assembly (Polished, Nickel, Teflon) BCM quality, modern manufacturing processes, and aerospace coatings are combined to ensure parts last a lifetime while performing far beyond requirements established nearly six decades ago. The BCM PNT Trigger and PNT Hammer are a precision machined Mil-Spec AISI8620 investment casting per the USGI TDP (Mil-Spec) for M16/M4 family of weapons. (not to be confused with MIM parts that are very common in the commercial market). 156/157 holes are honed to assist in perfect alignment and a smooth trigger pull. After that, the BCM PNT Trigger and PNT Hammer then goes through a 3 step heat treat and case hardening process for optimal grain structure alignment, yielding a stronger and more wear resistance product.. Polished The sear engagement surfaces are ground, but then hand polished well beyond the Mi