Airtech Studios VFC Avalon BEU Battery Extension Unit Police and Law Enforcement Airsoft Training Guns Included are three different types

Included are three different types of retention features that can be used to keep the pistol secured to the holster: adjustable Thumb-Snap

Amazing hop up performance for long range and accuracy

Measures: 17

FPS is 330-335 w/

Modify M4 Quantum Wiring Set

Airtech Studios VFC Avalon BEU Battery Extension Unit Police and Law Enforcement Airsoft Training Guns Included are three different typesThe Airtech Studios VFC Avalon BEU Battery Extension Unit is designed to fit on VFC PDW style stocks. Very easy to install so you can add longer and bigger batteries in your rear stock buffer area. Can fit up to a Titan 3000 nun chuck 11. 1v.