Davidson Defense Pipeline 7.5-inch 1:16 45ACP AR-45 Freefloat Tubular Handguard Pistol Complete Upper Build

Pipeline 7.5 Inch AR-45 Complete Upper .45 ACP Freefloat Tubular Handguard

The Pipeline AR-45 Complete Upper is a fully equipped upper assembly built around a Bear Creek Arsenal 7.5 inch .45 ACP barrel made from 4150 Chrome Moly Vanadium Steel with a Parkerized finish, M4 contour profile, and a 1:16 twist rate. The upper receiver is a billet design machined from 6061 aluminum built for pistol caliber platforms, paired with a 7 inch MFFAR7 freefloat smooth tubular handguard. This upper includes a complete bolt assembly and charging handle, giving builders the front end and cycling components needed for the upper side of a .45 ACP pistol build.

Key Features

• Bear Creek Arsenal 7.5 inch .45 ACP barrel, 4150 CMV steel, Parkerized finish, M4 contour profile
• 1:16 twist rate, .578x28 thread pitch
• Gas block journal 0.750 inch
• Direct blowback operating system, no gas block or gas tube required
• Billet pistol caliber upper receiver, 6061 aluminum
• MFFAR7 freefloat smooth tubular handguard, 7 inch
• KAK Industry micro flash can, .45 ACP, .578x28 thread
• 5/8 inch black crush washer included
• PCC bolt assembly for .45 ACP
• Mil-Spec quality M4 charging handle
• Black finish

Perfect For

• Builders pairing a complete upper with an existing lower receiver
• Shooters wanting a .45 ACP pistol length platform with a smooth tubular freefloat handguard
• Builders who want the bolt assembly and charging handle covered in one package

Barrel and Operation

This upper uses a 7.5 inch barrel made from 4150 Chrome Moly Vanadium Steel with a Parkerized finish and an M4 contour profile, manufactured by Bear Creek Arsenal. The 1:16 twist rate is suited to .45 ACP bullet weights, and the .578x28 thread pitch matches the included KAK Industry micro flash can. This build operates on a direct blowback system and does not use a gas block or gas tube. The barrel and related components make up the front end of this complete upper.

Upper Receiver and Handguard

The upper receiver is a billet design machined from 6061 aluminum built for pistol caliber platforms. The MFFAR7 freefloat smooth tubular handguard measures 7 inches and surrounds the barrel without contacting it, giving this upper a compact exterior forend built for a short pistol length platform.

Bolt Assembly and Charging Handle

The included bolt assembly is built for .45 ACP. A Mil-Spec quality M4 charging handle completes the cycling components of this upper, rounding out the included hardware. A 5/8 inch black crush washer is included as part of the muzzle end hardware.

Follow safe handling and manufacturer instructions.

Ensure compliance with all applicable federal, state, and local laws.

BCG and charging handle are included with this complete upper.

Component specifications are subject to the details provided in this listing.