by AR15 Tactical | Jan 21, 2015 | AR-15 Parts, AR-15 Stripped Uppers, General |
ASA AR-15 M4 SIDE CHARGER UPPER RECEIVER American Spirit Arms may not have produced the first side charging AR-15 but they certainly are the first to bring the design to main stream shooters. I have been pretty anxious to build an upper based around the ASA AR-15 M4...
