Davidson Defense AR-15 Lefty Upper Starter Kit Billet Receiver W/ Premium Left Ejecting BCG
Our lefty upper starter kit features the very best billet upper we carry
Made from one solid block of 7075-T6 aluminum
Strongest Upper Available Anywhere!
85,000 Psi Rated Military Grade Aluminum
Paired with our new Davidson Defense Premium Left Handed M16 AR-15 5.56/.223 Caliber
Black Nitride Finish Bolt Carrier Group BCG
This kit is a great start to any left handed shooters AR-15 build
Billet Upper Specifications:
Davidson Defense Tactical Billet Upper Receiver. CNC machined from 7075-T6 Billet. Features Mil-Spec 1913 Picatinny rail and a Type III class 2 hard coat anodized finish.
Made 100% in Smithfield, Utah using the highest quality aluminum and 5 Axis CnC machines available. The design of the upper incorporates the internal specs from the US government forged upper receiver drawings so the exactness and firing of the rifle is flawless.
Then the outside design has been matched with both forged & billet uppers in mind so that the upper looks good on both forged and billet uppers.
This upper is much stronger than a conventional forged upper with extra strength and high stress points reinforced and designed to withstand.
This billet upper withstood even the most punishing abuse along with extensive testing, and surpassed 12x the heat and stress testing of a conventional forged upper. It survived well beyond the failure point of a common forged upper receiver.
This upper is the strongest upper to date that we have ever tested.
Note: This billet upper will work with any standard quad rail or handguard, but may not fit rails with anti-walk or anti-rotation tabs.
Forward Assist and Dust Cover included
Bolt Carrier Group Specifications:
- 8620 Tool steel Enhanced Radius design (Angle Cut) Bolt Carrier with inside and out H&M Black Nitride Treatment
- Certified 9310 Steel MPI Bolt Head with inside and out H&M Black Nitride Treatment
- Extractor has Black Insert and O-Ring upgrade
- Billet Machined 4140 Steel Gas Key (designed to handle the heat)
- USA Made Grade 8 Fasteners
- Military Specification Gas Key Staking
- Left Side Ejector
- 5.56/.223 Caliber
The Carrier is Nitride Super Smooth Finish /Bolt Head is 9310 Nitride Melonite Coated
These are the same that are going into the guns our troops are using, with one enhancement, the nitride finish. Which is a longer lasting bolt group even when the finish wears the nitride keeps working to stop corrosion increase lubricity