14529 BCM Enhanced Lower Parts Kit for your AR15 Lower Receiver. This kit includes all the Mil-Spec quality components-BCM PNT Trigger Assembly- polished nickel teflon, BCM Pistol Grip, Mod 3 and BCM Enhanced Trigger Guard.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. Made in the USA. Photos show the exact item where applicable. Have questions? Reach out to Bay State Surplus and we'll get you squared away.