PRO2A 18" 450 Bushmaster 1/24 Mid Length 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.
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.
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.
Color: Standard Black or FDE or Gray. Standard is Black. Magpul FDE or Magpul Stealth Gray is extra. Look at pictures to see the type/color of receiver and handguard you will receive.
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: AR-15 Big Bore Mil-Spec Machined out of 7075-T6 Forged Aluminum, Single Large Feed Ramp, Type III Hardcoat Anodized Black with Forward Assist and Ejection Port Cover Installed
BARREL: 18 inch, 450 Bushmaster Caliber, 4150 Chrome Moly Vanadium Steel, 1:24 Twist, Heavy 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 Bowden Tactical
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 (Enlarged to 45 Cal) A2 Flash Hider and Crush Washer
BOLT CARRIER GROUP: 450 Bushmaster Caliber, M16 Profile, Mil-Spec, MP Tested, Nitride Treated, Properly Staked Gas Key, 8620 Steel Carrier, 9310 Steel Bolt
CHARGING HANDLE: Standard Charging Handle
LOWER PARTS: Milspec Polished Trigger & Hammer, Standard Grip & Milspec Lower Parts Kit
STOCK: Standard Milspec M4 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.
*Click here to learn more about our warranty.
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