This is a TALON Grips Inc Grip known as the Rubber, model 705R.
TALON Grips for Smith & Wesson M&P Shield 9mm" .40 Cal. This Rear wrap grip is in the rubber texture and offers full side panel coverage including the thumb rest area" full front strap coverage" and full coverage on the backstrap. This grip has graphic cutouts for the M&P emblem on both sides of the firearm.
Features:
Black finish
Durable single piece design provides maximum coverage;Proprietary material is less than 0.5mm thick;Increases control and accuracy