COWCOW ALUMINUM BLOW BACK UNIT FOR MARUI G19, G17 GEN.4 GBB (BLACK) AEP Airsoft Guns Just your standard 'ole black

Just your standard 'ole black metal M4 airsoft magazine

The angled surface is minimized to the point that it is functional

Co2 mag is 26 rounds

accessible by removing the dust cover

COWCOW ALUMINUM BLOW BACK UNIT FOR MARUI G19, G17 GEN.4 GBB (BLACK) AEP Airsoft Guns Just your standard 'ole blackG19 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