Wouldn't fit sig516 - Command Arms Accessories Caa M-16/AR-15/M-4 Picatinny Bayonet Lug Mount TM16FA1

Not sure if the lug on the Sig 516 is not "standard," but this ting would not fit at all. Either the adapter is too small or the lug is way too big. Wish it would have though, seamed like a well made product. Great service from OpticsPlanet on the return.
Pros: swell made, solid, light weight
Cons: Just wouldn't fit the lug on my Sig516

This review was written in the old system and had content requirements that are different than reviews written today.