Complete Upper Receivers

S2 Armament proudly offers Complete Upper Receivers which hold our outstanding Lifetime Warranty.  Boasting quality you would expect from our products, such as our extremely tight tolerance Bolt Carrier Groups, all uppers are hand-assembled and inspected for perfection.

We offer a wide range of upper receivers from 5.56 NATO to .50 Beowulf, and anything in between. If you are in the market for a 7.5″ 5.56 NATO, 8.3″ 9MM, 10.5″ 300 Blackout, or a 22″ 308 on the LR308 platform, we have you covered. S2 Armament is also a custom shop, so if there is something you are on the hunt for feel free to send us a message and we will work with you to build your dream setup.