Gorilla Machining AR-10 "Bumper" 7.5" .308 Winchester Upper Receiver – 7" M-LOK Handguard
Product Description
The Gorilla Machining Bumper 7.5" .308 Winchester Upper Receiver combines a compact design with quality materials and precision-machined components.
Built around the AR-10/LR-308 platform, this upper features a 7.5" barrel, forged 7075-T6 aluminum upper receiver, and 7" M-LOK free-float handguard.
The Bumper series was developed to offer customers an affordable upper receiver configuration without sacrificing essential features or manufacturing quality.
Backed by the Gorilla Machining Lifetime Warranty, this upper reflects our commitment to American manufacturing and quality craftsmanship.
Features and Components
7.5" .308 Winchester Barrel
The Bumper features a 7.5" .308 Winchester barrel manufactured from 4150 CMV-S steel.
Barrel specifications:
Muzzle Device
The included .30-caliber A2 birdcage flash hider features 5/8x24 threads and a manganese phosphate finish.
7" M-LOK Free-Float Handguard
The ABC Rifle Company 7" M-LOK Flat-Face Handguard features a Class III anodized finish, M-LOK accessory mounting slots, and low-profile top Picatinny rail sections.
Forged Upper Receiver
The Gorilla Machining AR-10 upper receiver is manufactured from forged 7075-T6 aluminum and features precision-machined surfaces and feed ramps.
Complete Product Specifications
Component | Specification |
|---|
Manufacturer | Gorilla Machining |
Model | Bumper |
Platform | AR-10 / LR-308 |
Caliber | .308 Winchester |
Barrel length | 7.5" |
Barrel material | 4150 CMV-S steel |
Twist rate | 1:10 |
Gas system | Pistol length |
Gas block | .750" low-profile steel |
Gas tube | Pistol length |
Muzzle threads | 5/8x24 |
Muzzle device | .30-caliber A2 birdcage flash hider |
Upper receiver | Forged 7075-T6 aluminum |
Handguard | ABC Rifle Company 7" M-LOK |
Bolt carrier group | Not included |
Charging handle | Not included |
Warranty | Gorilla Machining Lifetime Warranty |
Why Choose Gorilla Machining?
At Gorilla Machining, we focus on delivering quality components, precision machining, and dependable customer support.
The Bumper upper brings together a compact barrel configuration, forged aluminum receiver, and free-float handguard in one package.
GORILLA MACHINING
American Parts. Real People. Built Different.
Important Product Information
The bolt carrier group and charging handle are not included.
Technical verification: Your original description lists both pistol-length and rifle-length gas systems. This version uses pistol length based on the component list, but that specification should be confirmed before publishing. Also verify the exact receiver feed-ramp specifications with your manufacturer.
Legal Notice: Firearm configurations and component restrictions vary by jurisdiction. Customers should consult their local FFL and verify applicable federal, state, and local laws before purchasing.
