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The PNW Arms .300 Blackout Upper Receiver is a rugged, reliable and accurate Signature Series Upper that enables shooters to convert an existing 5.56 AR platform to the increasingly popular .300 Blackout for superior performance and higher velocity.

The PNW Signature Series Upper replaces the existing upper without modification, while utilizing the existing AR lower and magazines. Built to exacting standards, the Signature Series Upper offers the improved ballistics of the .300 Blackout without the cost of a new rifle.

The .300 Blackout round has 89% more frontal mass than the 5.56X45mm with sub-MOA accuracy to 400 meters, and with the wide variety of ammunition, is the most versatile cartridge on the market today.

Features of the PNW Arms .300 Blackout Upper Receiver include:

15” MWI Modular Rail
Mil-Spec Forged Upper Receiver
•Forged 7075-T6 M4 Flattop Upper with Internal Dry Lube and Laser T Marks
•4150 CMV 16” 1:7 5R Rifling (5/8×24 TPI) .300 Blackout Barrel
•15” MWI Modular Free-Float hand guard with three Picatinny rail sections included
•Mid-Length Gas System
•Low-Profile Gas Block
•V.2 Gunslinger Charging Handle
•HPT & MPI Tested Bolt Carrier Group
•Mil-Spec A2 Flash Hider
•Upper weight 4.8 pounds
•Lifetime Warranty

See more at store.pnwarms.com.

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