Odin Works Adjustable AR-15 Buffer Weight – Heavy


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AT3 Tactical Carbine Buffer Spring for AR15

AT3™ Carbine Buffer Spring for AR-15


Odin Works .750" Low Profile Tunable Gas Block - AT3 Tactical

Odin Works .750" Low Profile Tunable Gas Block


Heavy Steel Buffer for Overgassed or Blowback AR15

In the world of AR15s, you may have a specialized firearm that requires a specifically tuned gas system.  Especially for rifles that are overgassed, hosts for suppressors, or even handling a specialized action like 9mm blowback, being able to tune or gas system to ensure longevity and proper function of your gun is key.  And it starts with the buffer weight.

The Heavy Adjustable Buffer from Odin Works eliminates a lot of issues with trying to get your gas system just right.  Instead of buying a bunch of buffers of varying weight, or having to punch out the nylon endcap to adjust the individual weights inside, this is an all-in-one package that’s easy to use.  A large set screw on the face of the buffer is simply unscrewed, allowing you to modify the overall mass by choosing 3 out of the 7 included weights.  The heavy steel body allows you to start from a weight of 3.7 ounces, similar to an H1 buffer, all the way up to 5.8 ounces, which is slightly heavier than an H3 buffer and even usable in 9mm blowback AR15s.

If you’re looking for fine-tuning but don’t need a lot of weight, be sure to check out the Lite Adjustable Buffer, which includes an Aluminum body, and covers a range of 2.1 ounces to 4.2 ounces.


•Buffer body made from steel, with nylon endcap
•Includes 2 set screws for securing weights from the front of the buffer
•Includes 3 aluminum, 3 stainless steel and 1 tungsten weights (3.7oz – 5.8oz)

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

ODIN Works Lifetime Warranty

At ODIN Works your satisfaction is our commitment. We firmly stand behind our products and craftsmanship so If your ODIN Works product is found to be defective, we will repair or replace it free of charge for the life of the part.

The ODIN Works Lifetime Warranty does not apply if the product has been found to be misused, modified, or damaged.

*This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

For claims, please request an RMA.

For any questions or concerns regarding service and/or repairs, please contact us at the details below:

Contact Details:

  • Telephone: 1-208-906-1405

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 12 reviews
Russ Dryden
Works great

Solved my problem and works great

Thank you for the review! We're glad to hear that the Odin Works Adjustable AR-15 Buffer Weight - Heavy was helpful in solving your problem.

Great addition

Works really well and love the adjustability. Having fun fine tuning my build. Will definitely buy again for my next build.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Jose Sanchez
Adjustable buffer

The Odin adjustable weight buffer work really well and reasonably priced. Would buy again.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

1 more heavy weight

Just 1 swap, 1 more heavy weight for 1 of the light weights would make this kit perfect. I'll add a piece of steel or solder.

Gary St Laurent
Heavy buffer

Decent buffer once you adjust weight for your preferred set up put some type of thread lock on set screw it will loosen up