Armaspec Sound Mitigation Buffer (SMB) Captured Gen 3 – Multiple Buffer Weights Available

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Improved & Easy-To-Install Captive Buffer Weights For AR Builds

The Armaspec Sound Mitigation Buffer (SMB) Captured Gen 3 is a quick and easy replacement for your standard buffer and spring. It is designed to keep the buffer spring from rubbing against the inner wall of the buffer tube providing smooth and consistent operation as well as providing less noise when firing the weapon.

The SMB also helps significantly in reducing the felt recoil which results in an excellent return to target acquisition, giving the shooter more accurate follow-up shots.

Multiple Buffer Weights

The Armaspec Sound Mitigation Buffer (SMB) Captured Gen 3 is available in different buffer weights such as Carbine, Heavy, H2, H3, 9MM, and AR-10. (Please choose in the dropdown above for the correct buffer weight).

Note For 9MM: For proper function of the SMB in your 9mm rifle or pistol, the extra weight on the back of the bolt carrier needs to be removed. It is held in with a spring/roll pin.

Features:

  • Single-stage captured drop-in replacement for your standard buffer and spring
  • Reduce felt recoil
  • Keep the buffer spring from rubbing against the inner wall of the buffer tube providing smooth and quiet operation
  • Adjustable spring weight  (*Main spring can be trimmed at .25 lbs per coil to reduce tension up to a max of 12 coils)
  • Made in the U.S.A.
  • Lifetime Warranty

Specifications:

  • Actual Weight (Complete System):
    • Carbine: 4.41 oz.
    • Heavy: 4.91 oz.
    • H2: 5.81 oz.
    • H3: 6.71 oz.
    • 9MM: 9.88 oz.
    • AR-10: 7.20 oz
  • Equivalent Weight:
    • Carbine: 3.3 oz.
    • Heavy: 3.8 oz.
    • H2: 4.7 oz.
    • H3: 5.6 oz.
    • 9MM: 6.9 oz.
    • AR-10: 4.7 oz

Includes:

  • 1x Polymer Base Guide Rod
  • 1x Spring
  • 1x Buffer

Quick Instructions:

  • Insert polymer base with guide rod into the buffer tube.
  • Insert desired spring on the guide rod.
  • Insert the buffer over the spring.

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.

Armaspec Lifetime Warranty

  • All Armaspec products carry a LIFETIME WARRANTY and are warranted to be free from defects in material or workmanship.
  • Should there be a defect, we will repair or replace the product at our discretion at no cost to you.
  • Lifetime warranty does not apply to products sold as “blemished” or “manufacturer refurbished”.
  • You must have proof of purchase to initiate a WARRANTY claim.

Please email to rma@armaspec.com to request an RMA number.

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

Customer Reviews

Based on 5 reviews
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R
Richard Freeman
buy more

great

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

s
seth mark
Exceptional product

Smooth and silent. Great addition to any AR build.

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

R
RayLo
Just what I needed - H2

Perfect drop in replacement and feels smooth! Ejection timing now at close to 3:00 with NATO loads and NO MORE SPROING SOUNDS! H2 assy weighed 6.9oz Armaspec weights don't match the actual ( Armaspec H1 weighed 6.6oz, regular 3.0oz carbine & mispec spring weighed 4.8oz).

M
Mitchell Moseley
Armaspec SMB

Buffer set up works great, very smooth action, used an H (heavy) on a pistol length 300blk, running excellent at about 150 rounds so far and no complaints, will definitely outfit my other ar's with the same setup.

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

C
Chue Vang
Armaspec Sound Mitigation Buffer System gen3 H3

I have two JP h3 system. Two Armaspec gen 2, H2 and H3. Works, feels and sounds the same. The Armaspec gen 3 has noises for some reason. This is probably why it’s way cheaper. Not bad for the price. Thanks AT3 Tactical for your fast shipping!

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