Best upper receiver i own now, alpha shooting sports rules everyone - Alpha Shooting Sports SSR15 16 inch 5.56x45mm NATO Upper Receiver with Flash Hider Assembly

The upper married perfect to my Colt lower. Alpha Shooting Sports makes a great built AR-15 upper receiver. Finish and quality control are on point. Handguard is aligned with the receiver. Bolt Carrier Group is slick and extracts 100%. I didn't even clean the barrel before breaking it in because it was already shiny finished. I cleaned it after 100 rds or so. It cleaned up easy. It shoots really good with very tight groups. I am very pleased with this upper. The handguard has built in QD points that fit my Vickers sling. The rails up front fit my surefire flashlight and Magpul bipod mounts. I highly recommend this product.