PRO2A 18" 6mm ARC 1/7.5 Mid Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
GAS BLOCK: Standard or Adjustable. Adjustable is a great option if you are using a suppressor or just want to fine tune your system.
MUZZLE DEVICE: Standard A2 Flash Hider or Competition Muzzle Brake. Muzzle Brakes are for recoil reduction. The baffles and ports are milled larger to drive pressure up and to keep the muzzle down more effectively.
STOCK: Standard M4 or SOPMOD. SOPMOD has a wider cheek weld, rubber non slip butt pad, two water tight storage compartments and stainless steel QD swivel mount.
TRIGGER: Standard Milspec, Rise Armament RAVE 140 or Timney Impact. Milspec is a 5-6lb pound trigger. Rise/Timney has a single stage, crisp clean break, 3-3.5lb trigger pull.
UPPER RECEIVER: Gibbz Arms G4 Non Reciprocating Side Charging Billet Aluminum Receiver with Gen 2 Handle, M4 Feed Ramps, Type III Hardcoat Anodized Black
BARREL: 18 inch, 6mm ARC Caliber, 4150 Chrome Moly Vanadium Steel, 1:7.5 Twist, Medium Profile, Nitride/Melonite Treated - made for us by Tactical Kinetics
HANDGUARD: 15 inch M-LOK Free Floated, Machined out of 6061 T6 Aluminum – made for us by Axis MFG
GAS SYSTEM: Mid Length, Direct Impingement, Stainless Steel Tube
GAS BLOCK: Low Profile Gas Block, Machined out of 4140 Steel
MUZZLE DEVICE: Standard 5/8-24 A2 Flash Hider with Crush Washer
BOLT CARRIER GROUP: 6mm ARC Caliber, M16 Profile, Mil-Spec, MP Tested, Nitride Treated, Properly Staked Gas Key, 8620 Steel Carrier, 9310 Steel Bolt
CHARGING HANDLE: Integrated Side Charging Handle
LOWER PARTS: Milspec Polished Trigger & Hammer, Standard Grip & Milspec Lower Parts Kit
STOCK: M4 Milspec Stock with 6 position buffer tube, 3oz buffer, buffer spring, latch plate and castle nut
100% MADE IN THE USA
LIFETIME WARRANTY AND SUPPORT*
All our upper kits come with everything needed to turn a stripped lower into a complete pistol or rifle. All our uppers are carefully assembled by our team of experienced armorers and tested and ready to go out of the box. Every component is chosen to ensure a high quality upper is produced. Every upper is custom built to order and we go the extra mile to ensure the finished product is to your specifications. We partnered with Gibbz Arms to offer a proprietary patented receiver that has a non reciprocating side charging handle - handle stays forward during cycling. Side handle is on the opposite side of ejection port allowing the shooter to quickly charge or recharge the weapon without taking finger off the trigger and eye off the scope.
*Click here to learn more about our warranty.