This is a TALON Grips Inc Grip known as the Granulate, model 110G.
TALON Grips for Gen 4 Glock 19" 23" 25" 32" and 38 models with No Backstrap. This rear wrap grip is in the granulate texture. This grip provides full coverage on the side panels including above the thumb rest" ample coverage on the backstrap" and three finger wraps for the finger groves under the trigger guard. This grip has a logo cutout for the Glock emblem on the left side of the handle. This grip sticks extremely well even with the Rough Textured Frame (RTF).
Features:
Black finish
Durable single piece firearm specific design provides maximum coverage
Top quality fit and finish
No backstrap