Madbull M4 CQB 7-Inch Outer Barrel under-100 a compatible cylinder head is

a compatible cylinder head is available from us upon special request

Cylinder C Features: Similar look to Cylinder B with added reusable top and bottom caps to reinforce the shell for a louder bang

aluminum alloy

and playing in the rain or snow is a non issue because there is no FCU to be damaged

3inch Slide

Madbull M4 CQB 7-Inch Outer Barrel under-100 a compatible cylinder head is~1cm length adjustable. Fits most M4 AEG receivers in the market. 2" screws to lock the adjustable parts. This barrel is for extreme short CQB setups, features front sight pin groovesGreat if you want to really shorten your M4 for CQB! Note: the entire barrel including chamber section is 7" long.