Ok, I have read several post on two mac related sites which mentions the Soumi conversion upper. It would appear that several individuals got approval from the ATF and constructed their own. Come on guys share the wealth and post the plans or someone produce it so the rest of us can buy it from you. Either way can someone enlighten me with the uppers origin? Also who is Captain Monty? He shows up in some of the post that I have read concerning this Soumi conversion upper? Any info would be most appreciated.