The flat top M4 Mil-Spec upper receiver are forged CNC Machined from 7075-T6 Aluminum, the hardest and most durable material of any upper! To ensure even more strength they are Mil-Spec Type 3 hard coat anodized in rugged black.
The Upper features a 7.5” 300 AAC Blackout barrel, 7.62x35, made of the best barrel material known to man, 4150 Chrome Molly steel then Nitride coated! This upper is compatible with most subsonic and supersonic ammunition, with or without a sound suppressor in place. It has a 1:8 twist rate, pistol gas system and head spaced twice from the US manufacturer.
The 7” Hera Quad Rail is made from Airplane grade Aluminum & then hard coat anodized for durability.The end result, the best quality rail for the best value in the market!
Please Note: An “AR-15 Pistol” upper assembly has a barrel less than 16” in length. Pistol uppers are only for use on AR-15 pistol lowers and legal Short-Barreled Rifles. Other configurations may violate Federal law.Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.
DISCLAIMER: This is an Item or Assembly for sale that might have a rough appearance due primarily but not limited to milling, dents, scratches, uneven finish and missing or poorly applied stenciling. Any defect to the appearance of the item or assembly sold does not affect its function.
SAVE $ 12000 TODAY was $ 32900
Due to increased demand, lead time on upper assemblies is currently 5 business days for production prior to shipping (as of 4/16/17). All assemblies are built to order.
- LIMITED TIME ONLY -
On Orders of $400 or More
On specials all sales are final, limited warranty applies.
CBC Industries offers reliable, dependable, and the highest quality AR15 parts and AR15 accessories! We back all of our AR15 parts and products with our LIFETIME Warranty. Feel free to call us with any questions at (843)818-4374.
Located within the greater Charleston area in South Carolina, CBC Industries provides high quality AR15 upper receiver assemblies, AK47 and AR15 and barrels, AR15 parts, and accessories for the enthusiast as well as the small to medium builder.