M4 Mil-Spec Buffer Tube Assembly
$43.99 at Brownells
In stock Sale
Best price
$37.99at Brownells
Out of stock checked Nov 10, 2026
In stock now instead
- M4 Mil-Spec Buffer Tube Assembly $43.99at Brownells
- Tube Brn AR-15 Rifle Receiver Extension $49.18at Brownells
- Guntec USA AR-15 A2 Full Size Buffer Tube $37.99at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $37.99checked Nov 10, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Similar buffer parts in stock
This part is out of stock at every store we track. These similar buffer parts are in stock, with today's prices.
Tube Brn AR-15 Rifle Receiver Extension
$49.18 at Brownells
In stock Sale
Guntec USA AR-15 A2 Full Size Buffer Tube
$37.99 at OpticsPlanet
In stock Sale
Guntec USA AR-15 Extreme Duty Wide Castle Nut For Car/M4 Buffer Tube Black Chrome
$37.99 at OpticsPlanet
In stock Sale
UTG PRO Mil-spec 6-position Extension Tube - FDE
$37.97 at Kentucky Gun Co · 8 stores
In stock
Bravo Company Mfg Pistol Receiver Extension for AR15 Black BCM-Pistol-RE
$38.95 at MidwayUSA · 2 stores
In stock
Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $37.99 | $37.99 | $37.99 |
Since Sep 28, 2026.
About this part
The AR-15 5.56mm Rifle Buffer Tube is an AR-15 buffer part from Brownells. One store lists it, Brownells at $37.99.
Fits and works with
- Buffer system
- Rifle · Buffers and springs
Specifications
- Manufacturer
- Brownells
- Type
- Buffer Tube
- Platform
- AR-15
From the manufacturer
Replacement Rifle Buffer Tube for standard AR-15s. Mfg: Brownells
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