The Strike 80 Compact Pistol Frame Kit combines all the usual features from a Polymer80 frame but with SI modifications and enhancements that a shooter would want in a GLOCK style pistol frame. This 80% compact pistol frame kit is a collaboration between Strike Industries and Polymer80. SI designed grip hand thumb channel with top and bottom thumb indexing points. SI designed front & rear grip grooves along with keeping P80 aggressive side grip textures to ensure complete control of the pistol. SI designed support hand thumb ledge adds downward pressure on the pistol to control muzzle rise. SI designed magazine cutouts to assist with a better grip when removing magazines. Inside the trigger guard area, two bumps were added that are not available on a standard P80 frame. One for trigger over-travel stop and one for anti-snag when wearing gloves on those cold days or nights. Dont ever worry about slide bite with the extended beavertail on the back of the frame. Making sure we have the ever so popular trigger guard double undercut already included on P80 frames, this helps maintain a high grip to maintain recoil of the slide moving back and forth. When it’s time to disassemble the pistol, the SI designed slide lock groove helps applying pressure to the slide lock. Enhanced ergonomics and features with high-strength reinforced polymer construction gives the Strike 80 Compact Pistol Frame Kit comfort and balance with the looks of Strike Industries stylings. Included with the kit is the P80 locking block, rear rail, finishing jig, drill bits and end mill. Along with some tools you may already own, build yourself a complete GLOCK style pistol with compatible Strike Industries GEN3 parts. NOTE: NOT COMPATIBLE with SI P80 magwell or any other magwell.