Ground Zero Precision Billet Assembled Left Handed AR-15 Upper Receiver
Ground Zero Precision's Billet Left Handed AR-15 Upper Receiver is precision CNC machined from a 7075-T6 billet blank. Featuring a sleek, light-weight billet design, mil-spec 1913 picatinny top rail and finished in a durable type III class II hard coat anodize.
100% made in the United States from the aerospace grade aluminum and machined on new 5 Axis CnC machines. The design of the upper incorporates all of the internal specs from the US government forged upper receiver drawings so the exactness of fit and functionality of the rifle will be flawless on both forged and billet lower receivers.
The outside profile has been matched with both forged & billet uppers in mind so that the upper will look as good on a forged lower receiver as it does on a billet lower.
Designed to be much stronger than conventional forged upper receivers and featuring reinforced areas where extra strength is required due to inherent high stress points this billet receiver is built to withstand even the most demanding of environments and use.
We punished this receiver during our extensive testing and abused it well past the point of failure for conventional forged uppers. This billet upper not only surpassed the typical and expected failure point but it surpassed it by 12x during heat and stress testing. Well beyond the point where a common forged upper receiver would fail.
This upper so far the strongest upper to date we have ever tested and we're happy to offer it to you at a cost that is less than half of what other billet uppers sell for.
Note: This billet upper will work with any standard quad rail or handguard, but may not fit some rails with built in anti-rotation tabs.