PGP K-frame. You will need to also print the trigger and sear parts, a k-frame Hogue grip (or similar), and various hardware to assemble to your PGP.
Parts needed to complete assembly
Printed Parts List:
1 x K-Frame (this part)
1 x Trigger (
https://www.shapeways.com/product/XF4N5SXHV/pgp-k-frame-trigger)
1 x Sear (
https://www.shapeways.com/product/D3Y629D6B/pgp-k-frame-sear)
Hardware List:
2 x steel pins (1/8" diameter, 0.65" long)
1 x compression spring (1/4" diameter, 0.45" free length)
1 x Set Screw for RVA (3/8-24 thread, 1/2" long, McMaster 91375A644 or similar)
1 x frame mounting screw (8-32 thread, 3/8" long, McMaster 92210A192 or similar)
1 x grip mounting screw (8/32 thread, 3/4" long, McMaster 92949A197 or similar)