SAI uses in on their NY Compliant Standard and Scout models. It shortens the sight radius, so be sure to use a National Match front sight.

 

I use a Delta P Design adapter on my LRB M25. The purpose was to allow the use of a sound suppressor, but when the suppressor isn't on the gun I have an AR10 flash suppressor installed. It is shorter than the standard M14 flash suppressor.

 

I thought the delta p was a socom deal?

 

I use one on my 19.25” along with an SEI thread adapter. I like it quite a bit.