DPMS M-LOK 5.56x45mm NATO 16 inch Upper Receiver
$371.88 at OpticsPlanet · 3 stores
In stock Sale
Best price
$363.59at OpticsPlanet
Out of stock Sale checked Oct 22, 2026
In stock now instead
- DPMS M-LOK 5.56x45mm NATO 16 inch Upper Receiver $371.88at OpticsPlanet
- DPMS "Kitty Kat" 7.5" 5.56 6.5" Quad-Rail Upper $385.00at OpticsPlanet
- ABC RIFLE COMPANY AR-15 .223 Remington/5.56x45mm NATO Pistol 10… $359.99at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $363.59Salechecked Oct 22, 2026 | Out of stock | Buy at OpticsPlanet |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Similar upper receivers in stock
This part is out of stock at every store we track. These similar upper receivers are in stock, with today's prices.
DPMS "Kitty Kat" 7.5" 5.56 6.5" Quad-Rail Upper
$385.00 at OpticsPlanet · 4 stores
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ABC RIFLE COMPANY AR-15 .223 Remington/5.56x45mm NATO Pistol 10in Quadrail Handguard Complete Upper Receiver w/BCG And Charging Handle Bronze
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Andro Corp Industries AR-15 Complete M-LOK Upper Receiver with Flash Hider Assembly 5.56 NATO 16.5in 8in Barrel Medium Pistol Length 1-7 Twist 1/2x28
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ABC RIFLE COMPANY AR-15 Micro Pistol Build 5.56x45mm NATO 5in Barrel 4in M-LOK Handguard Upper Receiver Black
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Andro Corp Industries AR-15 Complete M-LOK Upper Receiver with Flash Hider Assembly 5.56 NATO 24.75in 16in Barrel Medium Mid Length 1-7 Twist 1/2x28
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In stock
Price history
Dashed line = out of stock. Tracking since Oct 14, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $363.59 | $363.59 | $363.59 |
Since Oct 14, 2026.
About this part
The DPMS M4 5.56x45mm NATO 16 inch Upper Receiver w/Rear MBUS is a 16" 5.56 / .223 upper receiver from DPMS. One store lists it, OpticsPlanet at $363.59.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Barrel length
- 16" · Handguards
Specifications
- Manufacturer
- DPMS
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
DPMS M4 5.56x45mm NATO 16 inch Upper Receiver w/Rear MBUS One Size. Chambered in 5.56 NATO with a 1/7in twist M4 barrel extension and a carbine-length gas system. This M4 profile barrel is finished off with a standard handguard F-Marked gas sight base and A2 flash hider. Upper: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized. These uppers are made for us right here in the USA by a mil-spec manufacturer. Bolt: Full-auto profile bolt carrier group. Milspec Carpenter No. 158 steel bolt Shot Peened High pressure tested Mag particle inspected Gas Key Hardened to USGI Specifications Fastened with Grade 8 screws and Staked Per Mil-Spec. Specifications for DPMS M4 5.56x45mm NATO 16 inch Upper Receiver w/Rear MBUS: Manufacturer: DPMS Caliber: 5.56x45mm NATO Barrel Length: 16 in Gas System Length: Carbine Length Barrel Twist Rate: 1-7 Finish: Phosphate Barrel Material: 41V50 Chrome-Moly Vanadium Steel Package Contents: DPMS M4 5.56x45mm NATO 16 inch Upper Receiver w/Rear MBUS DPMS DP51655109558: M4 5.56x45mm NATO 16 inch Upper Receiver w/Rear MBUS One Size
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