Madbull M4 CQB 7-Inch Outer Barrel under-100 adjusting up to 50 inches

adjusting up to 50 inches

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

Spring M100

First prototypes of the new weapon were built in 1959 and was officially adopted by the Czech Army in 1961

aluminum alloy

Madbull M4 CQB 7-Inch Outer Barrel under-100 adjusting up to 50 inches~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.