PSA 16" Carbine Length 5.56 NATO 1:7 M4 Nitride MOE Upper - with REAR MBUS BCG & CH - 516447394

Upper Receiver

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Best price

$329.99at Palmetto State Armory

checked Oct 1, 2026

Buy at Palmetto State Armory

Where to buy

Store	Price	Availability	Buy	Add to build
Palmetto State Armory	$329.99checked Oct 1, 2026	Check store	Buy at Palmetto State Armory

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Dashed line = out of stock. Tracking since Sep 28, 2026.

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Store	Latest	Lowest	Highest
Palmetto State Armory	$329.99	$329.99	$329.99

Since Sep 28, 2026.

About this part

The PSA 16" Carbine Length 5.56 NATO 1:7 M4 Nitride MOE Upper - with REAR MBUS BCG & CH - 516447394 is a 16" 5.56 / .223 upper receiver. One store lists it, Palmetto State Armory at $329.99.

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Gas system: Carbine · Handguards
Barrel length: 16" · Handguards

Specifications

Platform: AR-15
Barrel length: 16"

From the manufacturer

Barrel: Nitride finished 4150V chrome moly vanadium 16" barrel. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine-length gas system. Barrel is is finished off with Magpul MOE carbine-length handguards, F-Marked gas sight base, and A2 flash hider.
Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized for durability. These uppers are made for us right here in the USA by a mil-spec manufacturer.
Bolt: Full-auto profile bolt carrier group. 9310 steel bolt, mag particle inspected, Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. 8620 steel M-16 profile carrier is phosphate coated.
Includes: Magpul MBUS Rear Sight - Black. The US made MBUS (Magpul® Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16 platform. Spring-loaded flip up action is easily activated from either side or by pressing the top. Impact resistant polymer construction provides light weight and resists operational abuse.