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  4. Davidson Defense Anvil AR-45 Pistol Build Kit, 5-Inch 1:16 45ACP, BTR Brace, Freakin45 Suppressor

Davidson Defense Anvil AR-45 Pistol Build Kit, 5-Inch 1:16 45ACP, BTR Brace, Freakin45 Suppressor

Part Number: S-PI-PK-45ACP-65757-BTR
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On sale $677.99 $509.99
Retail Price:$677.99
Your Savings:$168.00(25%)
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Firearm Purchase Guide

Details

Anvil w/BTR Brace 5-inch 1:16 45ACP AR-45 Tubular Pistol Full Build Kit, Witt Machine The Freakin45 Suppressor

This is a complete AR-45 pistol build kit designed for shooters who want a suppressor-ready platform in a compact 5-inch configuration. The kit includes everything needed to assemble a functional pistol except the serialized lower receiver, paired with the Witt Machine The Freakin45 suppressor for immediate use.

Key Features

  • 5-inch 4150 CrMoV barrel with 1:16 twist rate, 37/64x28 thread pitch
  • 6061 billet pistol caliber upper receiver with blowback operation
  • 7-inch free-float smooth handguard for minimal contact and consistent accuracy
  • Witt Machine The Freakin45 Ultra-Compact Suppressor, 4-inch length, graphite black cerakote finish
  • Magpul BTR pistol brace for stable one-handed control
  • Complete mil-spec lower parts kit with AR-15 carbine buffer system
  • PCC AR bolt assembly matched to 45 ACP specifications
  • Hughes Precision thread adapter for suppressor compatibility
  • All components mil-spec quality with standard AR-15 compatibility

Perfect For

  • Shooters building a suppressor-ready AR-45 pistol platform
  • Home defense and short-range shooting applications
  • Builders seeking a complete kit with minimal additional purchases
  • Users prioritizing compact size with effective noise reduction

Suppressor Integration and Design

This kit is built around suppressor-ready operation. The 5-inch barrel features a 37/64x28 thread pitch, and the included Hughes Precision thread adapter converts to the 5/8x24 standard used by the Witt Machine The Freakin45. The suppressor itself measures 4 inches in length with a graphite black cerakote finish, keeping the overall footprint compact while delivering meaningful sound reduction. The free-float handguard design isolates the barrel from the upper receiver, maintaining consistency whether the suppressor is attached or removed.

Complete Lower Components Included

The kit includes a full mil-spec lower parts kit, mil-spec heavy-duty 6-position buffer tube, 8 oz. 9mm buffer, standard AR-15 carbine recoil spring, mil-spec receiver end plate, and AR-15 carbine castle nut. These components work together to manage recoil cycling in the blowback system. The Magpul BTR brace provides a stable platform for one-handed shooting and is compatible with the included mil-spec buffer tube. All lower assembly components are included except the serialized lower receiver.

Blowback Operation and 45 ACP Specifications

The 45 ACP cartridge operates in a blowback system without a gas tube, relying on direct pressure from the fired round to cycle the bolt. The PCC AR bolt assembly is specifically matched to 45 ACP specifications to ensure proper feeding, extraction, and reliability. The 1:16 twist rate is optimized for 45 ACP projectile weights and velocities. This design simplifies the upper receiver compared to direct impingement systems and reduces maintenance requirements.

May Dropship from Davidson Defense.
Verify suppressor compatibility before use. Ensure secure mounting before operation. Use only in accordance with applicable laws. Lower receiver not included. Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.

Specifications

Barrel: 5" .45 ACP Slim Profile Barrel, Blowback Operating System, 1:16 Twist Rate, 4150 CrMoV Steel, Parkerized Finish, 37/64x28 Thread Pitch

Upper Receiver: 6061 Billet Pistol Caliber AR-15 Upper Receiver

Handguard: 7" Free-Float Smooth Handguard, MFFAR7

Suppressor: Witt Machine & Tool Co. The Freakin45 Ultra-Compact Suppressor, 4" Length, Graphite Black Cerakote Finish, 5/8x24 Thread Pitch

Bolt Assembly: PCC AR Bolt Assembly for .45 ACP

Charging Handle: AR-15 M4 Mil-Spec Quality Charging Handle

Lower Parts Kit: Complete Mil-Spec AR-15 Lower Parts Kit

Castle Nut: AR-15 Carbine Castle Nut

Receiver End Plate: AR-15/M16 Mil-Spec Receiver End Plate

Recoil Spring: Standard AR-15 Carbine Recoil Spring, Made in the USA

Buffer: 8 oz. 9mm Buffer, Black

Buffer Tube: Mil-Spec Heavy-Duty AR-15 6-Position Buffer Tube

Pistol Brace: Magpul BTR Pistol Brace, Black, Compatible with Standard Mil-Spec AR-15 Buffer Tubes

Thread Adapter: Hughes Precision Thread Adapter, .578x28 RH Female to 5/8x24 RH Male

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