AIRSOFT KILLHOUSE M4 CQB 4.5" BARREL EXTENSION T238 The magazine base design was

The magazine base design was switched from a pin to a screw-on system

Maintenance: Apply silicone oil to the core of the magazine

Hop-Up Access: Functional charging handle reveals an adjustable polycarbonate hop-up chamber

and impact when you're not actively using it

S– medium

AIRSOFT KILLHOUSE M4 CQB 4.5" BARREL EXTENSION T238 The magazine base design wasKillhouse Weapon Systems M4 CQB 4. 5 inch Barrel Extension Product Description The Killhouse Weapon Systems 4. 5 inch M4 CQB Barrel Extension is an easy and lightweight solution for extending the length of your airsoft rifle's outer barrel. It is compatible with most standard Airsoft Electric Gun (AEG) setups. Features Length: Extends your outer barrel by 4. 5 inches. Material: Durable Metal construction. Weight: Lightweight design minimizes added