The PSA 10.5″ 5.56 NATO 1/7 Nitride Classic Upper w/ BCG, CH, & Rear MBUS is a reliable, ready-to-install AR-15 upper receiver assembly from Palmetto State Armory (PSA). It delivers excellent performance and value for building a compact AR pistol, short-barreled rifle (SBR — check local NFA rules), or custom carbine setup.
Crafted with mil-spec quality components and made in the USA, this complete upper features a 10.5-inch nitride-treated barrel chambered in 5.56 NATO with a fast 1:7 twist rate — ideal for stabilizing heavier 55-77 grain bullets for better accuracy and terminal performance at short to medium ranges. The 4150V Chrome Moly Vanadium steel barrel has a carbine-length gas system, A2 profile, .750 gas block journal with front sight base, and comes equipped with a PSA flash hider on 1/2×28 threads.
The forged 7075-T6 aluminum M4 upper receiver is hard coat anodized black for maximum durability and corrosion resistance. It includes a classic PSA carbine handguard for a traditional look and solid grip.This package is truly turnkey — it comes complete with:
Mil-spec Bolt Carrier Group (BCG) featuring a shot-peened Carpenter 158 bolt, full-auto profile carrier, and properly staked gas key with Grade 8 fasteners.Standard charging handle.Magpul Rear MBUS flip-up backup iron sight for quick, reliable sighting when optics fail.
Whether you’re assembling a lightweight home defense AR, a truck gun, or upgrading your existing lower, this PSA upper offers proven reliability, easy compatibility with any standard AR-15 lower, and outstanding bang-for-the-buck from a trusted American manufacturer backed by a full lifetime warranty.
Key Specifications:
- Barrel Length: 10.5″
- Caliber: 5.56 NATO
- Twist Rate: 1:7
- Barrel Material: 4150V Chrome Moly Vanadium
- Barrel Finish: Nitride
- Gas System: Carbine-length
- Barrel Profile: A2
- Muzzle Thread: 1/2×28
- Upper Receiver: Forged 7075-T6 Aluminum, Hard Coat Anodized
- Handguard: PSA Classic Carbine
- Gas Block: .750 Front Sight Base
- Muzzle Device: PSA Flash Hider
- BCG: Included (Mil-Spec, Carpenter 158 Bolt)
- Charging Handle: Included
- Sights: Magpul Rear MBUS
- Made in the USA
Note: All NFA rules apply for short-barreled configurations. Always verify state and local laws before purchase.
By purchasing PSA 10.5″ 5.56NATO Classic Upper w/BCG & Carbine Handguard & Rear MBUS from our online store, you are guaranteed to receive a high-quality item. We work with trusted brands to offer shooting and hunting enthusiasts, both amateur and professional, quality products at a reasonable price. Choosing to buy from us means opting for quality and practicality
The actual appearance of the product may differ from the image on the website. For additional information about payment, delivery, and product specifications, please contact us by phone or email.
