M4 Metal Hop Up Unit out-of-stock The module is fitted with

The module is fitted with a threaded base and a safety front cap and has a diameter of 30mm

Weight: 420 g Shipping weight: 430 g

but is specifically tailored to the AR15/M16 platform

In their offer

Fits Beretta PX4 9mm/

M4 Metal Hop Up Unit out-of-stock The module is fitted withDetails Weight: 33 g Shipping weight: 41 g Jing Gong JG is one of the most recognizable airsoft brand from China. They have a long history of providing good quality airsoft guns and accessories at affordable price. Their products are a great entry level choice for beginners and a good base for easy modifications to fulfil the needs of even most experienced ones.