I have decided I am going to send my M4-2000 off to have the QD system replaced with a more reliable choice. So my conundrum is which system to choose.

Currently I have the above mentioned M4-2000 and a Gemtech shield for rifle cans and a number of Griffin armament pistol and hybrid cans. So I don’t have to worry about compatibility with existing cans I have. However I do want to consider future purchases.

Currently I am leaning towards the Dead Air Key-mo system but I also see that Silencerco ASR would work.

Could anyone give me the pros and cons here? Also any other systems I should consider?

Thanks.