The Gen3 Sound Mitigation Buffer™ SMB™ is a single-stage captured drop-in replacement for your standard buffer and spring. The SMB™ is designed to keep the buffer spring from rubbing against the inner wall of the buffer tube providing smooth, quiet operation. Pat. Pend.
FEATURES:
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.
- Equivalent Weight:
- Carbine: 3.3 oz.
- Heavy: 3.8 oz.
- H2: 4.7 oz.
- H3: 5.6 oz.
- 9MM: 6.9 oz.
Installation instructions:
- 1. Insert polymer base with guide rod into the buffer tube.
- 2. Insert desired spring on the guide rod.
- 3. Insert the buffer over the spring.
Note: Spring will fully set after approximately 100 shots. Main spring can be trimmed at .25 lbs per coil to reduce tension up to a max of 12 coils.
| Weight | N/A |
|---|---|
| Size | SMB-308, SMB-9, SMB-Carbine, SMB-H, SMB-H2, SMB-H3 |
| MPN | ARM158-H2, ARM158-C, ARM158-H3, ARM158-9, ARM158-H, ARM158-308 |
| UPC | 810048490042, 810048490028, 60893990557, 810048490059, 810048490035, 60893990558 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
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US
Makes a big difference!
Just an FYI, this can be used in an A2 length buffer tube as long as you get the spacer with it. I emailed Armaspec to see what weight they recommended. I'm running a rifle length gas system, A2 buffer tube, rifle buffer, 22" barrel, shooting 77's at 2800. They recommended the SMB-H. Man, this was a way better upgrade than I expected! It quieted down all the spring noise, but most of all, it made my rifle shoot smooth as butter! Definitely a good investment!
USWorth it!
To anyone that enjoys adjusting their AR go better suit them, I recommend the sound mitigation buffer from Armaspec. It's well made and the instructions are very clear.
United StatesOption 2
So I would have at this time last year, 2022, told you that the JP Silent Capture and the ArmaSpec capture systems were in fact a gimmick products, coming from a gun builder/ gunsmithing back ground. That is until I did a WWSD build and decided to follow their build specs. Sometimes one has to admit they are wrong. While the Aramspec is a fixed weight system it is on par with its big competitor. They both function very close to each other, to the point were someone who is just looking to improve their guns recoil on a budget would not notice. For the money as long as you know which buffer weight you need this a decent and effective solution to spring noise and buffer/ carrier tilt. I now whole heartedly recommend both products to customers looking to smooth out their home/ "off the shelf" builds, aka factory guns. And I myself have been slowly converting my guns over. Side note: If using an A-5 buffer extension you must cut a spacer for the back of the tube to fill the buffer to BCG gap. Use a Delran Polymer, you can buy them pre machined from JP Enterprises if you do not have the means or want to machine it yourself. You will still need to trim to length if done right you can get three spacers per spacer from JP.
US9mm buffer and BCGs
To Jim who rated it a 1… With the 9mm BCG …it has a plug held in by a roll pin… Knock out the roll pin and remove the plug… That will let the BCG cycle back into the buffer tube… My 9mm buffer works Great… But you have to REMOVE the PLUG first
USGreat product
Works great for ar9 quite 👍
