.450 Bushmaster 10.5" Thumper AR-15 Upper Assembly
| Brand: | Moriarti Armaments |
| Product Code: | MAR-450-10-A2 |
| Availability: | In Stock |
-
$249.95
- $449.95
Classic Series
.450 Bushmaster 10.5" Thumper AR-15 Upper Assembly
The Moriarti .450 Bushmaster 10.5" Thumper is an AR-15 upper assembly featuring a 10.5-inch heavy-profile barrel, a 10-inch Diamond Cut M-LOK free-float handguard, and a .450 Bushmaster-specific A2-style flash hider.
The barrel is manufactured from 4150 Chrome Moly Vanadium steel with a Parkerized finish, 1:24 twist rate, single feed ramp, and pistol-length gas system. Its heavy-profile, non-fluted construction uses a .750-inch gas block journal and 5/8×32 muzzle threads.
The assembly features an A3 flat-top upper receiver manufactured from 7075 forged aluminum. Its enlarged ejection-port opening is configured for .450 Bushmaster and .458 SOCOM cartridges. The receiver includes a Picatinny top rail, forward assist, and dust cover.
The 10-inch Diamond Cut M-LOK handguard has geometric openings and M-LOK accessory mounting positions. The installed A2-style flash hider is specifically designed for the .450 Bushmaster bore diameter and features 5/8×32 threads.
The bolt carrier group and charging handle are optional components.
Key Features
.450 Bushmaster AR-15 upper assembly
10.5" heavy-profile, non-fluted barrel
4150 Chrome Moly Vanadium barrel steel
Parkerized barrel finish
1:24 barrel twist rate
Pistol-length gas system
.750" gas block journal
Single feed ramp
10" Diamond Cut M-LOK free-float handguard
.450 Bushmaster-specific A2-style flash hider
5/8×32 muzzle threads
7075 forged aluminum A3 flat-top upper receiver
Enlarged .450/.458 big-bore ejection port
Optional BCG and charging handle
Specifications
| Attribute | Specification |
|---|---|
| Manufacturer | Moriarti Armaments |
| Model | Thumper |
| Product Type | AR-15 Upper Assembly |
| Caliber | .450 Bushmaster |
| Barrel Length | 10.5 inches |
| Barrel Profile | Heavy |
| Barrel Material | 4150 Chrome Moly Vanadium |
| Barrel Finish | Parkerized |
| Barrel Twist | 1:24 |
| Barrel Fluting | Non-fluted |
| Feed Ramp | Single |
| Gas System | Pistol length |
| Gas Block Journal | .750 inch |
| Muzzle Thread Pitch | 5/8×32 |
| Muzzle Device | .450 Bushmaster A2-style flash hider |
| Handguard Length | 10 inches |
| Handguard Type | Diamond Cut M-LOK free-float |
| Handguard Finish | Black |
| Upper Receiver | A3 flat-top |
| Receiver Material | 7075 forged aluminum |
| Ejection Port | Enlarged .450/.458 big-bore opening |
| Receiver Top Rail | Picatinny |
| Forward Assist | Installed |
| Dust Cover | Installed |
| Bolt Carrier Group | Optional |
| Charging Handle | Optional |
Package Includes
One assembled .450 Bushmaster 10.5" Thumper upper
Installed 10" Diamond Cut M-LOK handguard
Installed .450 Bushmaster A2-style flash hider
Installed gas system
Bolt carrier group only when selected
Charging handle only when selected
Lower receiver, magazine, and ammunition are not included.
Frequently Asked Questions
What barrel does the .450 Bushmaster Thumper use?
The upper features a 10.5-inch, heavy-profile 4150 Chrome Moly Vanadium barrel with a Parkerized finish, 1:24 twist rate, single feed ramp, and pistol-length gas system.
Is the A2-style flash hider compatible with .450 Bushmaster?
Yes. The installed A2-style flash hider is specifically manufactured for the .450 Bushmaster bore diameter and uses 5/8×32 threads.
Does the upper include a bolt carrier group and charging handle?
Both components are optional and are included only when selected.
Product Image Notice
Images may not be the exact representation of the product.
