BudsGunShop.com - Glock 19 ?

yes it is Features:
1911-style grip angle
High-strength reinforced polymer construction
Extended beaver tail for enhanced control
Double undercut trigger guard
Accelerator cut to keep muzzle flat
Aggressive and unique GGP grip texture
Compact frame compatible with double stack 15-round G-19 magazines
Full length M1913 picatinny rail in line with the bore
Gen 3 size equivalent
The GGP compact Combat Pistol Frame comes stripped and ready to be built on right out of the box. The frame itself is molded from high strength reinforced polymer, ready to stand up to the any abuse you can throw at it. It even features a full length M1913 Picatinny rail designed to be in line with the bore of the completed handgun.The GGP Combat Pistol frame is a compact model sized to utilize Gen3 equivalent components and double-stack G-19 magazines. The frame comes stripped and may require minor fitting during assembly.

Joseph, Yes the frame is for a Gen 3 G 19.

Joseph, yes Sir, this is for Gen3 Glock 19. Gen 3 size equivalent (Will not fit Gen 4 or Gen 5 slides). Full manufacturer details here : https://greyghostprecision.com/ggp-combat-pistol-frame-compact/