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

from$53.99MSRP $59.99 Save $6.00
Buffer Weight: Choose buffer weight
Choose your options Stock and the exact price show once you pick a buffer weight.
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Product description

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.
All 6 options on this page

Customer reviews 27

Joseph Verified buyer
These are AMAZING, I will be using in all my future builds, if you want a smoother operation experience and better fire control with frt capabilities that exceed your expectations. Shop no further. Just do your research and buy the right one.
roy.hooker-1231 Verified buyer
Armaspec is only what I run in my ARs, this is my second one but 1st of the sound mitigation, it’s slightly quieter that the gen1 I was running, but I do plan on buying the gen4 version when I do my next build ! Best thing to
Run to get rid of that spring sound you get when firing ARs, plus i I got it on sale and steal!
hogsed54 Verified buyer
Quiet. Operates flawlessly.
fred.ivey Verified buyer
Well built and functioning perfectly reduced recoil and barrel rise and was able to engage follow up shots faster
dshizz512 Verified buyer
Amazing product did exactly what I wanted it to do and that is make the action smooth as butter. Absolutely no reason to pay what other manufacturers are asking for similar products. This has been paired with an adjustable gas block and a sustained Industries JComo V2. Can't wait to test it with a range trip.

AT3 Tactical · We’re thrilled the SMB is giving you that butter-smooth action at a fraction of the cost, David, and we hope you have an absolute blast testing it out at the range with your new setup!

at3tactical.xo4jn Verified buyer
Fantastic value, cycles reliably and greatly reduces an overgassed gun.

Installed on my PSA 16" AR-15, swapped out the carbine weight buffer with the H3. It shoots .223 55 grain Hornady ammo reliably and ejects casings at the 3 O'clock position.
Alan Wolslegel Verified buyer
The Armaspec captured buffer worked exactly as advertised. The mil spec buffer spring noise is gone, recoil is less and much smoother. The gun runs great and is more fun to shoot. I highly recommend replacing you mil spec buffer with the Arrmaspec SMB.
David G. Verified buyer
Very satisfied with product. The shipping was super fast and the checkout in their site was easy. A company that I will come to and purchase from again.
seanwattles Verified buyer
Absolutely love it, was concerned at first that I didn't get a heavy enough of one, but turned out to be just a tad heavier than the original milspec buffer that came with my Radical RF-15. Sort of changes the recoil impulse, not in a bad way, just different. Now [link removed] isn't hard to keep on target but this does make it easier for faster followup shots. The only downside is navigating the hammer for installation and removal, but it would likely be easier if I removed the buffer retaining pin. All in all a solid upgrade!
crispo64 Verified buyer
I purchased the H3 SMB for a [link removed] suppressed build I did because it was very over gassed. this buffer not only corrected the gassing issue but the recoil impulse is so smooth that I purchased another for a different build. I highly recommend this system

AT3 Tactical · Thank you for your review! We are glad to hear that our SMB was able to help with your over gassed build and provide a smooth recoil impulse. We appreciate your recommendation and hope to continue providing quality products for your future builds. Happy shooting!

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Warranty & returns

Backed by the Armaspec Lifetime Warranty!

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.

90-day no-hassle returns

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.

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