I started the "war" with the initial comment on AR stocks not belonging on AKs. Let's get this back on track.
I don't want or care for a collapsing stock on my AK, but absolutely agree that some may find one desirable/beneficial. They look silly to me, but that really doesn't matter. The folding option is more desirable to me though. Easist option is a straight bolt on Romy wire folder, but some don't like shooting the wire stock. OK.
So, getting back to the OP and the question about a stock adapter, what other choices are there besides that piece of crap plastic one? Photos are best.
My AR with Sopmod fully collapsed has a LOP an inch shorter than my Arsenal SGL-31. But, the way I shoot it NTCH, it is just a hair shorter than a Warsaw pact AK. I don't wear armor (firefighter, not LE) and I don't need my AK stock to go any shorter than where I shoot my collapsable AR. Therefore, collapsing stock on the AK is not a real benefit for me (and I don't mount slings on stocks, AR or AK. Receiver end plate for me. Don't need storage either).
What is the legth of pull with an adapter bolted on the back end of the receiver and an AR stock installed? Can anyone post a photo(s) of an AR stocked AK (fully collapsed) next to a Warsaw pact stocked AK? Most adapters I have seen add length to the set up and I'd like to see how much shorter they really can go.
Let's get back to the question.