purchased 10 of the bulgarian circle 10 magazines(6 in black polymer and 4 in "clear" poly,all are 30 rounders.the fit is perfect and the function is flawless, i have field tested every one of them and have put over 800 rounds down range w/o any malfunctions PERIOD. i think that they work the best with the arsenal (bulgarian} 5.56 w/folding stock. i refuse to try tapco or any other off brand because i feel they wont even come close to the circle 10's
By
the "old marine" from
orlando florida