NBS AR-15 Stripped Forged Upper Receiver T-Marked M4 Flattop

The NBS AR-15 Upper is a stripped M4 flattop style receiver. The upper starts as a 7075 aluminum forging and is precision machined to Military specifications. After machining is complete the upper is finished with a Type-3 Mil-Spec anodizing. This upper is stripped, and does not include the forward assist assembly or the dust cover assembly. Technical Information: M4 Flattop 7075 Aluminum Forging Type-3 Mil-Spec Anodizing M4 Feed Ramps