The 307 Off-road Company shows how to install the PTS EPG M4 Airsoft Grip. This gip has an ergonomically designed shape and is a fully ambidextrous design at a conventional grip angle. This is available for AEG owners as well for Gas Blowback Rifle owners.
PTS Syndicate sent in news early today that they will soon be releasing the PTS EPG and EPG-C in Dark Earth on the 25th of February 2016. Both will be available for AEG and Gas Blowback Rifles. These are made with Dupont Zytel High Performance Reinforced Polymer and compatible to existing airsoft M4 lower receivers.
Airsoftology reviews one of the releases for 2015 by PTS Syndicate, the Enhanced Polymer Grip or EPG... "Jonathan takes a look at the latest grip offering from PTS Syndicate; the EPG (Enhanced Polymer Grip) to see if it's a worthy upgrade for your airsoft AEG & GBBR."