COWCOW RM1 Guide Rod NcStar This innovative design allows for

This innovative design allows for 0 BBs to drop out after taking out your hi capa mags

Internally

The M29 is powered by a single 12-gram CO2 cartridge and is housed in the full-size grip

They are the highest quality BBs currently on the market

This is the main problem with a lot of inner and outer parts from different manufacturers which can be same product

COWCOW RM1 Guide Rod NcStar This innovative design allows forStainless Steel material with CNC machined Drop in 2nd spring and additional spring housing design 3 different weight of recoil springs for precise calibration Combine with primary spring to soften recoil Enhance the reaction force to speed up the blowback cycle Available in Black, Silver, Gold & Rainbow