You folks are confusing me. How can HR Arms be correct, when he states the Larue rep is correct in stating the 15-22 is commercial spec and that a mil-spec stock will not work? You just stated the 15-22 takes mil-spec stocks but you are agreeing with HR Arms & the Larue rep.
Of course the 15-22 buffer tube is molded one piece, and has no springs & weights, but that is not what was asked by the OP. He is asking is the Larue rep correct in stating the 15-22 is commercial spec and is he correct in stating a mil-spec stock wont fit the 15-22? You two are agreeing with Larue and I just don't understand how.