AR-15 80% 5.56 NATO 10.5" Pistol Build Kit with Quad Rail Upper

Complete your next AR-15 build with the AR-15 80% 5.56 NATO 10.5" Pistol Build Kit, available from Tactical Machining. This comprehensive package includes all the premium components you need to finish your rifle at home. Designed for seamless compatibility, durability, and performance, this kit takes the guesswork out of the build process and sets you up for success from start to finish.

Featuring a forged Tactical Machining 7075 80% lower, a factory-assembled DPMS upper, and mil-spec components throughout, this kit is built to deliver reliable function, long-term performance, and a clean, professional assembly.

Key Features

• Complete AR-15 Build Kit: Includes all major components required to finish your AR-15 pistol build at home.
• Factory-Tested Upper: DPMS 10.5" 5.56 upper with quad rail handguard, BCG, and charging handle included.
• 7075 Forged Lower: Tactical Machining forged 80% lower receiver for maximum strength and reliability.
• Mil-Spec Construction: Built to exact specifications for dependable performance and long-lasting durability.
• Customizable Platform: Compatible with standard AR-15 components and accessories.

What's Included

Upper Assembly
- DPMS 10.5" 5.56 NATO barrel with 1:7 twist, M4 feed ramps, and nitride-treated finish
- Pistol-length gas system
- Low-profile gas block and A2 flash hider
- 9" Panther Quad Rail Handguard
- Forged 7075-T6 aluminum A3 upper receiver
- DPMS Black Nitride 5.56 Bolt Carrier Group
- DPMS Mil-Spec Charging Handle

Lower Components
- Tactical Machining 7075 Forged AR-15 80% Lower Receiver
- SB Tactical SBA5™ Pistol Stabilizing Brace®
- Smith Defense 3oz 6-Position Carbine Buffer Tube Kit
- Smith Defense AR-15 Lower Parts Kit

Specifications

• Barrel Length: 10.5"
• Barrel Material: 4150V Chrome Moly Vanadium
• Finish: Nitride Treated
• Chamber: 5.56 NATO
• Twist Rate: 1:7
• Feed Ramps: M4
• Gas System: Pistol-length
• Handguard: 9" Panther Quad Rail
• Receiver Material: Forged 7075-T6 Aluminum
• BCG Material: Carpenter 158 Steel
• BCG Profile: Full Auto

Details

The DPMS quad rail upper delivers versatility and durability, featuring a rugged Panther-designed handguard with laser-etched markings for accessory mounting. The nitride-treated 10.5" barrel is chambered in 5.56 NATO with a 1:7 twist, providing exceptional accuracy and longevity. Each upper is factory-assembled, test-fired, and shipped sealed for reliability and performance. Combined with Tactical Machining’s forged lower and premium lower parts, this kit is ready to help you complete a dependable AR-15 pistol build.

For support related to the upper receiver, please contact DPMS directly.

Compliance Notice

This kit contains an 80% lower receiver and other non-serialized firearm components. Under California law, this product is or contains an unserialized “firearm precursor part” and cannot be sold into the State of California. Orders for shipment to California or residents of California cannot be accepted.

This item is also restricted from shipping to: California, Connecticut, New Jersey, New York, Washington D.C., Washington, Hawaii, Colorado, Philadelphia, York, and Reading (PA), Maryland, Massachusetts, Nevada, Illinois, Vermont, and Rhode Island. Always check and comply with all federal, state, and local laws before purchasing or assembling firearm components.