DPMS Complete AR-15 Upper — 7.5" / 300 AAC Blackout (M-LOK)

A perfect partner to our lowers, this DPMS complete AR-15 upper is ready for your next build. This complete upper features a 7" lightweight M-LOK free-float handguard and a 7.5" barrel chambered in 300 AAC Blackout. Each upper arrives fully assembled with forward assist, dust cover, bolt carrier group (BCG), and charging handle — ready to go right out of the box.

The DPMS M-LOK Rail upper is built for accessories. The exclusive Panther-designed handguard with proprietary markings is only available on this new line of DPMS upper receivers.

Key Features

• Barrel Length: 7.5"
• Barrel Material: 4150V Chrome Moly Vanadium Steel
• Barrel Finish: Phosphate
• Barrel Profile: Heavy / M4
• Chamber: 300 AAC Blackout
• Twist Rate: 1:8"
• Barrel Extension: M4
• Gas System: Pistol-length
• Diameter at Gas Block: .750"
• Gas Block Type: Low-profile
• Muzzle Device: A2-style flash hider (5/8-24 muzzle)
• Upper Receiver: Forged 7075-T6 aluminum (A3)
• Receiver Type / Style: M4, M4 feed ramps
• Handguard Type: 7" lightweight M-LOK free-float rail (Panther design)
• Bolt: Carpenter 158, shot-peened
• Bolt Carrier: Full-auto profile; parkerized outside and chrome lined inside
• Staked Gas Key: Yes (Grade 8 fasteners)
• Overall Length: 17"
• Includes: Bolt carrier group and charging handle

Details

Barrel: 7.5" 4150V chrome-moly vanadium barrel chambered in 300 AAC Blackout with a 1:8" twist, M4 barrel extension, and a pistol-length gas system. This phosphate-finished barrel uses a .750" diameter low-profile gas block and ships with an A2-style flash hider. The barrel pairs with the DPMS 7" lightweight M-LOK free-float rail.

Upper: Forged 7075-T6 A3 AR upper machined to MIL-SPEC and hardcoat anodized black for durability. These uppers are manufactured in the USA by a mil-spec contractor and feature M4 feed ramp cuts.

Bolt Carrier Group: Shot-peened, mil-spec Carpenter 158® steel bolt. Gas key is secured with Grade 8 fasteners and staked per mil-spec. Carrier is full-auto profile, parkerized on the exterior and chrome lined on the interior. Charging handle included.

Each upper is assembled to order and test-fired by DPMS. If you experience any issues, please contact DPMS directly — units are received sealed from DPMS and shipped to customers in the same sealed condition.

Shipping Restrictions

This item cannot be shipped to California, Colorado, Connecticut, Hawaii, Illinois, Maryland, Nevada, New Jersey, New York, Rhode Island, Washington, Washington, D.C., or the cities of Philadelphia, York, and Reading in Pennsylvania.

By purchasing this product, you confirm compliance with all federal, state, and local laws regarding firearm ownership.