If you're looking to avoid having to remove your buffer tube to install an adapter plate, this mount is for you. It slides on easy and tightens down via a clamping motion. It is very secure once in place. It's a little pricey, but to avoid having to deal with the pain of removing a staked buffer tube, I was willing to pay the price. Works with commercial and mil-spec tubes.
Pros: VERY easy install, very secure.
Cons: Does not allow buttstock to fully collapse.
This review was written in the old system and had content requirements that are different than reviews written today.