changing from ar-15 to ar-10

[buffetdestroyer]

There are 3 parts out of the lower parts kit that are different on the DPMS LR308 series. They are the take down pins and bolt catch screw (it's a screw instead of a rollpin). The bolt catch needs to be tapered on the bottom edge to fit, but a file or grinder will make short work of that and it will still work in a standard AR15.
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MERCURY COUGAR SPECIFICATIONS