Perfect fit - Strike Industries AR Picatinny Stock Adapter

I put this on an early sig 556 that has a threaded reciever like an ar15. I wanted to add a side folder and this did the trick. Fit and finish was perfect. Easy to install and the Indexing feature is nice because you spin it on as far as it can go straighten it backup and then tighten in a bolt that sucks in the place into the receiver. No wobbling or weird gaps. Would buy again.