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Availability: In Stock
Current Stock: Out of stock
The Aero Precision M5 LR-308 rifle receiver extension buffer tube assembly is the backbone of a reliable AR-308 build, engineered to handle the recoil energy of full-power rifle cartridges. Built from 7075-T6 aluminum—a premium aerospace-grade alloy—this buffer tube combines durability with a sleek black finish that matches modern rifle aesthetics. Whether you're assembling a precision long-range platform or a general-purpose .308 rifle, this component delivers the strength and consistency Aero Precision is known for across the M5 platform.
Aero Precision's M5 receiver extension is designed specifically for the larger .308 Winchester footprint, so it integrates seamlessly with M5-spec stocks, grips, and buttpad assemblies. The 7075-T6 aluminum resists bending and fatigue under sustained shooting, and the anodized black finish offers corrosion resistance for field and range use alike. This is a workhorse part—not flashy, just proven.
If you're building an AR-308 from the ground up or replacing a worn tube on an existing rifle, this assembly gives you a solid foundation. Pair it with a quality buffer and spring to dial in the recoil impulse your rifle needs, whether you're running a suppressor, a muzzle brake, or nothing at all.
| Brand | Aero Precision |
| Platform | M5 LR-308 |
| Material | 7075-T6 Aluminum |
| Finish | Black Anodize |
| Category | Receiver Extension / Buffer Tube |
This receiver extension is engineered for the Aero Precision M5 platform, which is the standard for .308 AR builds. Confirm your lower receiver and stock/grip components are M5-spec before ordering.
7075-T6 is a high-strength aerospace-grade aluminum alloy that resists bending and fatigue better than standard aluminum. For a buffer tube absorbing repeated recoil impulses, this material ensures long-term reliability and minimal deflection.
A buffer tube assembly typically pairs with a buffer weight, recoil spring, and a stock or buttpad to function. Check that any stock or grip you select is M5-compatible to ensure a proper fit.
SKU: 115766553 • Width: 4.1in • Height: 1.9in • Depth: 11.8in • Weight: 0.8oz
Availability: In Stock
Current Stock: Out of stock
The Aero Precision M5 LR-308 rifle receiver extension buffer tube assembly is the backbone of a reliable AR-308 build, engineered to handle the recoil energy of full-power rifle cartridges. Built from 7075-T6 aluminum—a premium aerospace-grade alloy—this buffer tube combines durability with a sleek black finish that matches modern rifle aesthetics. Whether you're assembling a precision long-range platform or a general-purpose .308 rifle, this component delivers the strength and consistency Aero Precision is known for across the M5 platform.
Aero Precision's M5 receiver extension is designed specifically for the larger .308 Winchester footprint, so it integrates seamlessly with M5-spec stocks, grips, and buttpad assemblies. The 7075-T6 aluminum resists bending and fatigue under sustained shooting, and the anodized black finish offers corrosion resistance for field and range use alike. This is a workhorse part—not flashy, just proven.
If you're building an AR-308 from the ground up or replacing a worn tube on an existing rifle, this assembly gives you a solid foundation. Pair it with a quality buffer and spring to dial in the recoil impulse your rifle needs, whether you're running a suppressor, a muzzle brake, or nothing at all.
| Brand | Aero Precision |
| Platform | M5 LR-308 |
| Material | 7075-T6 Aluminum |
| Finish | Black Anodize |
| Category | Receiver Extension / Buffer Tube |
This receiver extension is engineered for the Aero Precision M5 platform, which is the standard for .308 AR builds. Confirm your lower receiver and stock/grip components are M5-spec before ordering.
7075-T6 is a high-strength aerospace-grade aluminum alloy that resists bending and fatigue better than standard aluminum. For a buffer tube absorbing repeated recoil impulses, this material ensures long-term reliability and minimal deflection.
A buffer tube assembly typically pairs with a buffer weight, recoil spring, and a stock or buttpad to function. Check that any stock or grip you select is M5-compatible to ensure a proper fit.
SKU: 115766553 • Width: 4.1in • Height: 1.9in • Depth: 11.8in • Weight: 0.8oz