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Questions & Answers
Caliber:
.300 AAC Blackout
Barrel Length:
7.5 in
Gas System Length:
Pistol Length
Barrel Twist Rate:
1-8
Firearms Threads Per Inch:
5/8x24
Finish:
Phosphate
Gas Block Journal Size-Diameter:
.750 in
Handguard Length:
7 in

Code: 458-UFH-DSNP73-DP51655111877

MPN: DP51655111877

UPC: 810141220744

List: $449.99Save 18%
$369.73

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Product Info for DPMS M-Lok .300 AAC Blackout, 7.5 inch Upper Receiver

Barrel: 7.5in Chambered in 300AAC Blackout, with a 1:8 twist rate, M4 barrel extension, and a pistol length gas system. This phosphate barrel is finished off with a DPMS Lightweight M-Lok free-float rail, .750in diameter low profile gas block, and an A2 flash hider.image

Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. These uppers are made for us right here in the USA by a mil-spec manufacturer.

Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is parkerized outside, and chrome lined inside.

Specifications for DPMS M-Lok .300 AAC Blackout, 7.5 inch Upper Receiver:

Manufacturer: DPMS
Caliber: .300 AAC Blackout
Barrel Length: 7.5 in
Gas System Length: Pistol Length
Barrel Twist Rate: 1-8
Firearms Threads Per Inch: 5/8x24
Finish: Phosphate
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 7 in
Bolt Carrier Group Included: MIL-SPEC
Charging Handle Included: MIL-SPEC
Length: 17 in

Package Contents:

  • DPMS M-Lok .300 AAC Blackout, 7.5 inch Upper Receiver

DPMS M-Lok .300 AAC Blackout, 7.5 inch Upper Receiver Orderable Models

List of Orderable Models

  • DPMS M-Lok .300 AAC Blackout, 7.5 inch Upper Receiver, One Size, DP51655111877 , MPN: DP51655111877 , UPC: 810141220744 , Code: 458-UFH-DSNP73-DP51655111877
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Last updated 2026-06-14 UTC.