AR.450 Bushmaster

AR.450 Bushmaster

Regular price $ 1,254.00

Have you been feeling a little blue because you haven't been able to find a semi-automatic handgun chambered for straight-walled, big-bore cartridges like the .450 Bushmaster? Well, cheer up friend! Windham Weaponry has just what you're looking for.

The .450 Thumper pistol features a forged 7075 T6 aircraft aluminum flat-top upper receiver paired with a Magpul enhanced trigger guard lower receiver, both of which are treated with a hardcoat black anodize finish. The 9” long medium-profile barrel is made of 4150 chrome-moly steel, sports a Melonite QPQ finish and has an M4-style feed ramp. The threaded muzzle is fitted with a much needed 3-chamber muzzle brake to tame felt recoil. The 7" long free float 6063 aluminum handguard has M-LOK accessory and QD sling attachment points. The end plate features a QD socket with a sling swivel provided.

This gun ships with a set of Kriss polymer flip-up sights. The smooth, pistol-style buffer tube is fitted with an SB Tactical wrist brace. Other features include a Hogue over-molded pistol grip, one five-round magazine and a hard side storage case.


- Caliber: .450 Bushmaster
- Type: Pistol
- Action: Semi-Automatic, Gas Impingement System
- Capacity: 5 + 1 – Ships with one 5 Round Magazine
- Weight: 5.8 Lbs. (without magazine)
- Length: 26.25”
- Safety: Manual Lever with Indicator Markings on Both Sides of Receiver
- Receiver: Flat Top Upper Receiver / Magpul Enhanced Trigger Guard in Lower
- Receiver Material: Forged 7075 T6 Aircraft Aluminum with Aluminum Trigger Guard
- Receiver Finish: Hardcoat Black Anodize Finish with Laser Caliber Identification
- Bolt Material: Carpenter 158 Steel
- Barrel: 9” Medium Profile, Melonite QPQ Finish with .450 Compensator
- Barrel Material: 4150 Chrome Moly Vanadium 11595E Steel w. M4 Feed Ramps
- Rifling: 1 Turn in 24" – Right Hand Twist
- Receiver Tube: Fitted with SB Tactical Pistol Arm Brace – Includes a Q.D. Endplate and Q.D. sling swivel
- Forend: 7? Windham Weaponry Free-Float Railed Handguard
- Pistol Grip: Hogue Beavertail Pistol Grip
- Rear Sight: Magpul MBUS Rear Flip Sight
- Front Sight: Magpul MBUS Front Flip Sight