but it isn't like the commercial version is a failure waiting to happen. It would be more accurate to describe the mil-spec as well beyond what is needed and the commercial version as completely adequate.
100% agreement.Someone could do an FEA of the different tube types to determine the actual difference in strength but it isn't like the commercial version is a failure waiting to happen. It would be more accurate to describe the mil-spec as well beyond what is needed and the commercial version as completely adequate. The primary substantive reason to go with a mil-spec receiver extension is that certain stocks are not available in a commercial version.