The Geissele Buffer Tube Assembly for AR-15 H3 Buffer and Super 42 Spring, Desert Dirt Color is a buffer tube that fits AR-15.
The Geissele Premium Mil-Spec Buffer Tube is machined from 7075-T6 aluminum, finished in Type 3 Hardcoat Anodize, and built to mil-spec standards. The carbine-length tube features 6 stock positions, weighs 3.7 oz, is made in the USA, and is compatible with most mil-spec-diameter AR-15 stocks. It includes a mil-spec castle nut and end plate. The Geissele Super 42 Spring improves AR-15 reliability with its unique three-strand wire design, which acts as a harmonic damper and energy absorber to reduce spring fatigue and failure. It also eliminates the common spring "twang" and provides 15% more average return force than a standard buffer spring, helping maintain reliable function under demanding conditions.
The buffer tube (receiver extension), buffer and spring control how an AR-15 cycles and also carry the stock. Check the tube diameter (mil-spec or commercial) and length against your stock and rifle before ordering.
How It Compares
Also compare the Buffer Tube for AR-15, Desert Dirt Color, Super 42 Braided Wire Buffer Spring and H3 Buffer Kit for AR-15 and Super 42 Braided Wire Buffer Spring and H2 Buffer Kit for AR-15. Browse all AR-15 Parts and the full Geissele Automatics range. New to this? Read our guide: AR-15 Upgrades: Charging Handles, Safeties, Buffers and Muzzle Devices.
Ideal For
- AR-15 builds that call for an H3 buffer, supplied with the tube and spring
- Mil-spec diameter AR-15 stocks that need a 6-position carbine-length tube
- Rifles that benefit from the Super 42 spring's 15% higher average return force
- Builds finished in Desert Dirt Color
Key Features
- Complete Buffer Tube Assembly
- Geissele Super 42 Spring
- H3 Buffer Weight
- Anodized Finish
- Desert Dirt Color
- 6-Position
- H3 Buffer
- Super 42 Spring
Compatibility & Fitment
Fits AR-15. Not sure it fits? Contact us before you order and we will check for you.
Technical Specifications
Brand | Geissele Automatics |
Type | Buffer Tube |
Accessories | H3 Buffer |
Description | 6 Position |
Finish | Anodized |
Platform | AR-15 |
Color | Black |
MPN | 08-163S-H3 |
UPC | 817953027011 |
US Shipping & Support
Genuine Geissele Automatics, brand new and covered by the manufacturer's warranty. Shipping is free on US orders of $99 or more, and smaller orders ship from $6.95. Questions about fit, mounting or which option suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What does the Automatics Buffer Tube Complete Assembly fit?
Fits AR-15.
Is this a genuine Geissele Automatics product?
Yes. It is a new, genuine Geissele Automatics product sourced through an authorized US distributor.
How much is shipping?
Shipping is free on US orders of $99 or more. Orders under $99 ship at a flat rate from $6.95 to $9.95, depending on the order total.
