Polymer80's PF940 80 percent Pistol Frame offers compatibility with Glock 17/22 Gen3 components, and is an industry first. Features such as the extended beaver tail, double undercut trigger guard, and a thumb ledge considerably enhance the ergonomics allowing for an effective grip and improved recoil mitigation. The frame is constructed of a high-strength reinforced polymer with a Picatinny/STANAG compliant accessory rail. The kit includes a blank serialization plate, stainless steel locking block rail system and rear rail module, hardened rail system pins, a finishing jig, drill bits, and a end mill. This model has a black finish and features an aggressive and adaptable grip texture.