+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Armaspec C Sound Mitigation Gen3 Buffer Up to 10% Off w/ Free Shipping — 6 models

Special offer available for this product. Click here to see!
Armaspec H3 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H3
Armaspec H2 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H2
Armaspec H Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec AR10 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-AR10
Armaspec 9 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-9
Armaspec Sound Mitigation Buffer H3 Gen3, SS/Black, ARM258-H3
Armaspec Sound Mitigation Buffer H3 Gen3, SS/Black, ARM258-H3
Armaspec Sound Mitigation Buffer H2 Gen3, SS/Black, ARM258-H2
Armaspec Sound Mitigation Buffer H2 Gen3, SS/Black, ARM258-H2
Armaspec Sound Mitigation Buffer H Gen3, SS/Black, ARM258-H
Armaspec Sound Mitigation Buffer H Gen3, SS/Black, ARM258-H
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer 9 Gen3, SS/Black, ARM258-9
Armaspec Sound Mitigation Buffer 9 Gen3, SS/Black, ARM258-9
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec C Sound Mitigation Gen3 Buffer, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec H3 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H3
1 of 22 images
Armaspec H3 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H3
Armaspec H2 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H2
2 of 22 images
Armaspec H2 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H2
Armaspec H Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H
3 of 22 images
Armaspec H Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
4 of 22 images
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec AR10 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-AR10
5 of 22 images
Armaspec AR10 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-AR10
Armaspec 9 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-9
6 of 22 images
Armaspec 9 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-9
Armaspec Sound Mitigation Buffer H3 Gen3, SS/Black, ARM258-H3
7 of 22 images
Armaspec Sound Mitigation Buffer H3 Gen3, SS/Black, ARM258-H3
Armaspec Sound Mitigation Buffer H3 Gen3, SS/Black, ARM258-H3
8 of 22 images
Armaspec Sound Mitigation Buffer H3 Gen3, SS/Black, ARM258-H3
Armaspec Sound Mitigation Buffer H2 Gen3, SS/Black, ARM258-H2
9 of 22 images
Armaspec Sound Mitigation Buffer H2 Gen3, SS/Black, ARM258-H2
Armaspec Sound Mitigation Buffer H2 Gen3, SS/Black, ARM258-H2
10 of 22 images
Armaspec Sound Mitigation Buffer H2 Gen3, SS/Black, ARM258-H2
Armaspec Sound Mitigation Buffer H Gen3, SS/Black, ARM258-H
11 of 22 images
Armaspec Sound Mitigation Buffer H Gen3, SS/Black, ARM258-H
Armaspec Sound Mitigation Buffer H Gen3, SS/Black, ARM258-H
12 of 22 images
Armaspec Sound Mitigation Buffer H Gen3, SS/Black, ARM258-H
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
13 of 22 images
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
14 of 22 images
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer 9 Gen3, SS/Black, ARM258-9
15 of 22 images
Armaspec Sound Mitigation Buffer 9 Gen3, SS/Black, ARM258-9
Armaspec Sound Mitigation Buffer 9 Gen3, SS/Black, ARM258-9
16 of 22 images
Armaspec Sound Mitigation Buffer 9 Gen3, SS/Black, ARM258-9
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
17 of 22 images
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec C Sound Mitigation Gen3 Buffer, SS/Black, ARM258-C
18 of 22 images
Armaspec C Sound Mitigation Gen3 Buffer, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
19 of 22 images
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
20 of 22 images
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
21 of 22 images
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C
22 of 22 images
Armaspec Sound Mitigation Buffer Carbine Gen3, SS/Black, ARM258-C

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
Could you please provide instructions on how to disassemble the system and adjust the weights? Expert Answer

As per the manufacturer:
Insert polymer base with guide rod into the buffer tube.
Insert desired spring on the guide rod.
Insert the buffer over the spring.
Email us at Techsales@opticsplanet.com or contact the manufacturer directly for further assistance.

by Ethan, Gear Expert, January 4, 2023
See 2 More Answers
Will they work with an FRT?

Yes I believe so. Armaspec Recommend the SMB for FRT users as they say the SRS will not work with an FRT.

by nicecarrot, Verified Owner, May 12, 2026
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Takes all the guesswork out of "which buffer" I need to run! by StraightShooter, Verified Owner, March 9, 2026
Bought this to run with my disruptor, between this and the riflespeed adjustable GB, YOU DON'T HEAR OR FEEL MUCH!
1/1 found this helpful
Helpful Positive Review
works with frt by Bamboo12, Verified Owner, April 16, 2026
pretty stiff yet works with my frt. although sounds almost the same running regular buffer spring.
1/1 found this helpful
Helpful Positive Review
Recommended, and Recommended AGAIN...! by Big Jake, Verified Owner, June 30, 2026
Solid item which performs as advertised! MUCH easier to handle than standard buffer. I needed to lengthen the buffer extension for a folding stock, HOWEVER the solution was to place FOUR QUARTERS behind this buffer (WHICH ONLY COST ONE DOLLAR). Engin...
Read More...
1/1 found this helpful
Helpful Positive Review
good quality by Nuke, Verified Owner, July 22, 2026
Seems to be made well, mostly bought because it was a cheaper H3 buffer but also liked that it was a all in one unit. Easy to install
1/1 found this helpful
Helpful Positive Review
#1 Upgrade for AR platform. by Alf2026, Verified Owner, July 30, 2026
Have been using captured buffer springs for a few years now. Used to use JP Enterprises but have started using these. For the money I think this is a better made product. First thing I do to upgrade a AR platform rifle or pistol. Comes in H1 H2 H3 9M...
Read More...
1/1 found this helpful
Helpful Positive Review
Get you one of these. by Samuel Bolyer, Verified Owner, November 28, 2024
Installed the heavy version in 6.5 grendel. Lessened recoil, much smoother. Will never use another buffer again. Get you one, stop considering and just get it.
1/1 found this helpful
Read All 48 Reviews
Show In Stock Only
6 Models Available
Additional Features
All
Search

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Armaspec C Sound Mitigation Gen3 Buffer

The Gen3 Sound Mitigation Buffer SMB is a captured single-stage 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#US8800424/Pat. Pendingimage

WARNING: California`s Proposition 65

Specifications for Armaspec C Sound Mitigation Gen3 Buffer:

Manufacturer: Armaspec
Color: Stainless/Black
Condition: New
Country of Origin: USA

Features of Armaspec C Sound Mitigation Gen3 Buffer

  • Single-stage 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 specialized factories
  • Lifetime Warranty

Package Contents:

  • Armaspec C Sound Mitigation Gen3 Buffer

Armaspec C Sound Mitigation Gen3 Buffer Orderable Models

List of Orderable Models

  • Armaspec H Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H , MPN: ARM258-H , UPC: 810048492442 , Code: AMS-BFA-SMT2B-ARM258-H
  • Armaspec C Sound Mitigation Gen3 Buffer, SS/Black, ARM258-C , MPN: ARM258-C , UPC: 810048492435 , Code: AMS-BFA-SMT2B-ARM258-C
  • Armaspec H3 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H3 , MPN: ARM258-H3 , UPC: 810048492466 , Code: AMS-BFA-SMT2B-ARM258-H3
  • Armaspec H2 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H2 , MPN: ARM258-H2 , UPC: 810048492459 , Code: AMS-BFA-SMT2B-ARM258-H2
  • Armaspec AR10 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-AR10 , MPN: ARM258-AR10 , UPC: 810048492480 , Code: AMS-BFA-SMT2B-ARM258-AR10
  • Armaspec 9 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-9 , MPN: ARM258-9 , UPC: 810048492473 , Code: AMS-BFA-SMT2B-ARM258-9

Armaspec C Sound Mitigation Gen3 Buffer Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Armaspec H3 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H3 , MPN: ARM258-H3-EDEMO , Code: AMS-BFA-SMT2B-ARM258-H3-EDEMO-RE-C
  • USED, Armaspec H2 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H2 , MPN: ARM258-H2-EDEMO , Code: AMS-BFA-SMT2B-ARM258-H2-EDEMO-IN-C
  • USED, Armaspec H Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H , MPN: ARM258-H-EDEMO , Code: AMS-BFA-SMT2B-ARM258-H-EDEMO-RE-C
  • USED, Armaspec 9 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-9 , MPN: ARM258-9-EDEMO , Code: AMS-BFA-SMT2B-ARM258-9-EDEMO-OB-C
  • USED, Armaspec 9 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-9 , MPN: ARM258-9-EDEMO , Code: AMS-BFA-SMT2B-ARM258-9-EDEMO-RE-C
  • USED, Armaspec H3 Sound Mitigation Gen3 Buffer, Stainless/Black, ARM258-H3 , MPN: ARM258-H3-EDEMO , Code: AMS-BFA-SMT2B-ARM258-H3-EDEMO-RE-B
  • USED, Armaspec 9 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-9 , MPN: ARM258-9-EDEMO , Code: AMS-BFA-SMT2B-ARM258-9-EDEMO-RE-B
  • USED, Armaspec H Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H , MPN: ARM258-H-EDEMO , Code: AMS-BFA-SMT2B-ARM258-H-EDEMO-OB-A
  • USED, Armaspec H2 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-H2 , MPN: ARM258-H2-EDEMO , Code: AMS-BFA-SMT2B-ARM258-H2-EDEMO-OB-A
  • USED, Armaspec 9 Sound Mitigation Gen3 Buffer, SS/Black, ARM258-9 , MPN: ARM258-9-EDEMO , Code: AMS-BFA-SMT2B-ARM258-9-EDEMO-OB-A
  • DEMO, Armaspec H2 Sound Mitigation Gen3 Buffer, Stainless/Black, ARM258-H2 , MPN: ARM258-H2-DEMO , Code: AMS-BFA-SMT2B-ARM258-H2-DEMO
  • USED Armaspec 9 Sound Mitigation Gen3 Buffer, Stainless/Black, ARM258-9, EDEMO1, Used, Condition Like New , MPN: ARM258-9-EDEMO1 , Code: AMS-BFA-SMT2B-ARM258-9-EDEMO1
  • USED Armaspec H3 Sound Mitigation Gen3 Buffer, Stainless/Black, ARM258-H3, EDEMO4, Condition Fair, Other , MPN: ARM258-H3-EDEMO4 , Code: AMS-BFA-SMT2B-ARM258-H3-EDEMO-OT-D
  • USED Armaspec AR10 Sound Mitigation Gen3 Buffer, Stainless/Black, ARM258-AR10, EDEMO2, Used, Condition Fair , MPN: ARM258-AR10-EDEMO2 , Code: AMS-BFA-SMT2B-ARM258-AR10-EDEMO2
  • USED, Armaspec C Sound Mitigation Gen3 Buffer, Stainless/Black, ARM258-C , MPN: ARM258-C-EDEMO , Code: AMS-BFA-SMT2B-ARM258-C-EDEMO-US-U
  • USED Armaspec H Sound Mitigation Gen3 Buffer, Stainless/Black, ARM258-H, EDEMO1, Used, Condition Fair , MPN: ARM258-H-EDEMO1 , Code: AMS-BFA-SMT2B-ARM258-H-EDEMO1
  • USED, Armaspec H2 Sound Mitigation Gen3 Buffer, Stainless/Black, ARM258-H2 , MPN: ARM258-H2-EDEMO , Code: AMS-BFA-SMT2B-ARM258-H2-EDEMO-IN-D
  • USED, Armaspec H Sound Mitigation Gen3 Buffer, Stainless/Black, ARM258-H , MPN: ARM258-H-EDEMO , Code: AMS-BFA-SMT2B-ARM258-H-EDEMO-RE-B
Compare (0)
1 item has been added
Add at least two items to compare
Last updated 2026-09-04 UTC.