M4 DMR hop up

[madbaz]

Hi got a wee issue with my m4 DMR I can set the hop up but after a few shots the range drops and have to adjust its a standard tm hop up with a h-nub

[sj_asc]

Re: M4 DMR hop up

The Standard M4 hop chamber design is poor in comparison to other types. My bet is that the adjustment is working it's way loose. You will have to tighten it up, free it from all grease and possibly use a tight o-ring under the adjustment wheel. With a DMR build, the main spring will be heavier, and the transferred shock to the chamber can work things out of place, even if only very slightly, this will make a big difference at range.