Product Description
MCS AR-15 16.5" INCH RIFLE UPPER 1:7 5.56 NATO FREEFLOAT KEYMOD HANDGUARD
The MCS 16.5" 5.56 NATO upper build kit is engineered for precision and reliability, delivering proven performance for serious gunsmiths. Built around a 16.5-inch MCS barrel made from 4150 Chrome Moly Vanadium steel with QPQ nitride finish, this kit offers enhanced durability and corrosion resistance.
The 1:7 twist rate accommodates a variety of projectile weights, ensuring consistent accuracy from 55-grain to 77-grain bullets. The mid-length gas system promotes smoother cycling and reduced recoil compared to carbine-length systems, while the micro low-profile gas block with 0.750 gas block size streamlines the setup. The 15-inch freefloat Keymod handguard is crafted from 6061-T6 aluminum in a sleek black finish, employing the Keymod system for versatile accessory attachment and barrel isolation.
Mounted on a 7075-T6 aluminum upper receiver with anodized finish and M4 feed ramps, this kit combines robust construction with customization options. Fitted with a 1/2x28 TPI GI birdcage flash hider, this upper build kit delivers performance and versatility. This kit includes all necessary upper components except the BCG, charging handle, lower parts kit, and lower receiver.
Barrel: MCS 5.56x45mm 16.5" QPQ Nitride Medium Profile AR-15 Barrel
Caliber: 5.56x45mm NATO
Barrel Length: 16.5 inches
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Finish: Nitride
Barrel Profile: Medium
Barrel Twist Rate: 1:7
Barrel Thread Pitch: 1/2x28
Barrel Gas System Length: Mid-Length
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: KeyMod
Upper Receiver: AR-15 Upper Receiver, M4 Feed ramps, 7075 T6 Aluminum, Anodized
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Gas Block Size: 0.750
Gas Block: Micro Low-Profile Gas Block, .750 O.D Barrel Steel
Gas Block Finish: Phosphate
Muzzle Device: AR-15 1/2x28 TPI GI Birdcage Flash Hider
Muzzle Thread Pitch: 1/2x28
Muzzle Device Finish: Manganese Phosphate
