Well I already have the draco. Some will say that just go buy another gun cause the cost is the same, as stated I already have the gun. The cost of SBR'ing it will be just shy of $400 due to stamp trust parts etc. I can get the more exspensive of the two extensions plus trunion for $170 or the lesser exspensive one for $110 plus trunion. I'm a machinist by trade and have a shop at my disposal so put it all together is no quarm. As far as the velocity loss the 7.62x39 is a much different animal then 223. With your usual 125gr ammo I'm still getting 2200fps out of the draco according to my chrono. The advantage is that I will have a brakes rifle the same length as a normal ak without a brake. That and it won't loook like every other ak on the wall out there, granted many have done this same thing but I have yet to see another one in person.