COWCOW ALUMINUM BLOW BACK UNIT FOR MARUI G19, G17 GEN.4 GBB (BLACK) GAS Uses a standard AA battery

Uses a standard AA battery type

the EPM1 has also been updated significantly

Dual-side release latch provides easy adjustment while remaining anti-snag

The internals feature reinforced high performance parts to ensure uncompromised reliability and performance out of the box

The Jag Arms KL 27rd Green Gas Hi-Capa Airsoft Magazine

COWCOW ALUMINUM BLOW BACK UNIT FOR MARUI G19, G17 GEN.4 GBB (BLACK) GAS Uses a standard AA batteryG19 Blow Back UnitHighlighted features6061 Aluminum material with CNC machinedUltra lightweight designDurable construction prevents flexing and warping under hard useProvide stable and smooth blowback cyclingPerfect Fit with COWCOW piston headAvailable in Black and SilverFor TM G19, TM G17 Gen4 and TM G19 Gen4*PS: Please note: installing parts assemble fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer