As are standard features on all guns, they are often overlooked until a flaw of some sort has been detected.Some do not offer enough traction to remain reliable when your hands are sweating.
The grips are larger and with the palm swell fit my hand perfectly allowing greater control of the rifle. The softer material also helps with recoil.

Detailed Product Description
Mounts to any 20mm Weaver/Picatinny Rails.
Push button system to fold into 3 adjustable positions to allow for versatile shooting positions
Ergonomic Finger Grooves for Most Comfortable Grip

Features
•Picatinny Mounting Deck to Slide on and Screw Tight
•Ergonomic Finger Grooves for Most Comfortable Grip
•Tactical Pattern Accenting a Cool Look
•Clever End Cap Conceals Battery Storage and Controls Grip Mounting
•Practical Side Slides Allow for Ambi Use of Pressure Pad