Action Army AAP-01 Steel RMR Sight CNC BB is a 20R length short

is a 20R length short M4 magazine that holds an incredible 170 round bb capacity and offers the same reliability that all PTS magazines have long been famous for

It is also significantly slimmer than the first generation EPM's so stacking the magazines in pouches or during storage takes up less space than before

It also has a low blowback insert piece and special bottom ramp so the hammer never catches under the BBU

It comes with the correct sized wrench

The LA Capa Customs guide rod features a duralumin construction

Action Army AAP-01 Steel RMR Sight CNC BB is a 20R length shortAAP 01 Steel RMR Sight CNC and Front Sight