Charles Daly 500219 AR 410 Upper 410 Gauge 2.5Only 19 Aluminum Barrel wBlack Anodized Finish Flip Up Front Rear Sights wQuad Picatinny Rail Auto Ejection Includes 1 5rd Magazine

The Charles Daly AR .410 Upper allows any AR15 to be converted to a .410 shotgun. The CD .410 Upper features a picatinny quad rail forend and comes with a 5rd magazine. This upper works with milspec lower only. MUST USE CARBINE BUFFER TUBE. Upper includes buffer that must be used with carbine buffer spring for proper function. Overall cartridge length must be 2.29inches or less for proper function.