Armaspec SMB™ Buffer Kit – AR-15 GEN3 – Buffer Tube, End Plate, Castle Nut

Be the first to review

Out of Stock
Orders will Ship within 1 Business Day
Backed by the Armaspec Lifetime Warranty!
TOP ADD-ON'S

Armaspec ECB Enhanced Combat Button Kit - Black

$17.09
Armaspec FULCRUM-90 Ambi AR-15 Safety Selector - Multiple Colors

Armaspec FULCRUM-45/90 Ambi AR-15 Safety Selector - Black

$40.49

Mitigate Recoil and Elimate Buffer Sound on Your Next AR Build

The Armaspec SMB™ Buffer Kit – AR15 GEN3 is a premium buffer system upgrade designed to provide enhanced recoil management, durability, and smoother cycling for AR-15 and AR-10 rifles while reducing the loud buffer sound that happens with traditional designs. This all-in-one kit includes a Mil-Spec buffer tube, end plate, and castle nut, offering everything you need for a reliable and optimized buffer system.

Features

  • Precision-Machined Buffer Tube – Made from high-strength 7075-T6 aluminum, ensuring maximum durability and a secure fit.
  • SMB™ (Silent Mitigation Buffer) System – Reduces recoil and minimizes spring noise, delivering smoother and quieter operation.
  • Mil-Spec Castle Nut & End Plate – Designed for secure, rock-solid assembly with no unwanted movement or rotation.
  • Drop-In Compatibility – Fits Mil-Spec AR-15 lower receivers, making installation quick and easy.
  • Corrosion-Resistant Finish – Anodized for wear and corrosion resistance, ensuring long-lasting reliability.

Specifications

  • Brand: Armaspec
  • Model: SMB™ Buffer Kit – AR15 GEN3 – Buffer Tube, End Plate, Castle Nut
  • MPN: ARM268
  • Fit: AR-15 and AR-10
  • Buffer Weights: Carbine, H1, H2, H3, 9MM, and AR-10
  • Finish: Anodized and Stainless
  • Material: Aluminum and Steel

Products available on this page:

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.

Leave your review
Rating

Customers who viewed this item also viewed these products

Armaspec SRS Enhanced Buffer Tube Kit GEN 4 - Multiple...

(2)
$108.89
Armaspec SRS Enhanced Buffer Tube Kit Gen 4 – Tailored Recoil Reduction Transform your

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

(23)
Improved & Easy-To-Install Captive Buffer Weights For AR Builds The Armaspec Sound Mitigation Buffer

Armaspec AR-10 SRS Enhanced Buffer Tube Kit GEN 4

(1)
$108.89
Armaspec AR10 SRS Enhanced Buffer Tube Kit Gen 4 Upgrade your AR-10 with Armaspec’s
AT3™ Mil Spec Buffer Tube Kit For AR-15

AT3™ Mil Spec Buffer Tube Kit For AR-15 - 9...

(91)
$39.99$33.99
The perfect kit for your next build – at a price that can’t be

Luth-AR .308 Mil-Spec Carbine Buffer Tube Kit

(2)
$99.99
High Quality Mil-Spec Carbine Buffer Tube Kit for AR-10/.308 Rifles If you’re planning to
Armaspec QD End Plate

Armaspec QD End Plate

$22.49
Receiver End Plate Packed With Integrated QD Socket Made from aircraft-grade aluminum and finished
AT3 Tactical Castle Nut for AR15

AT3™ Castle Nut for AR-15 Buffer Tubes - 9 Colors...

(102)
$4.49$3.82
Secure Your AR15 Buffer Assembly with a Steel Castle Nut This steel castle nut
CMMG AR-15 Carbine Buffer Tube Kit

CMMG AR-15 Carbine Buffer Tube Kit

$62.66
Finish Your AR-15 Build or Convert From a Fixed Stock to Adjustable The CMMG
Fortis K1 Enhanced End Plate with Friction-Fit Castle Nut - AT3 Tactical

Fortis K1 Enhanced End Plate with Tapered Castle Nut for...

(6)
$37.95
Lightweight AR-15 Castle Nut and Endplate with Friction Fit Fortis created the two-piece K1
Fortis LA Carbon Fiber Stock With Buffer Tube

Fortis LA AR-15 Carbon Fiber Stock With Buffer Tube, Castle...

$439.95
Carbon Fiber AR-15 Stock Kit Complete with Buffer Tube The Fortis Lever Action (LA)
LBE Unlimited AR-15 Castle Nut

LBE Unlimited AR-15 Castle Nut

(4)
$7.99
LBE Unlimited AR-15 Castle Nut The LBE Unlimited AR15 Castle Nut is an essential

UTG Pro AR-15 Pistol Buffer Tube Kit - Buffer, Springs,...

$54.97
AR-15 Pistol Buffer Tube Kit The UTG AR-15 Pistol Buffer Tube Kit comes with

Frequently purchased together

Timber Creek Enforcer M-LOK Mini Angled Foregrip Black

Timber Creek Enforcer Mini Angled Foregrip - M-LOK - 4...

(2)
$55.99
Timber Creek Enforcer M-LOK Mini Angled Foregrip Control recoil while looking stylish with Timber
Dead Air Armament Key Mount Muzzle Brake

Dead Air Armament Key Mount AR-15 Muzzle Brake -1/2×28 -...

(10)
$85.99$77.39
Your Device For Great Recoil Management & Muzzle Rise Control The Dead Air Armament

Radian Raptor-LT Ambidextrous AR-15 Charging Handle

(62)
$74.95
Radian Raptor LT with Polymer Levers The Raptor-LT charging handle utilizes the same patented

Armaspec Victory Ambidextrous AR-15 Charging Handle

(48)
$71.99
Integrated Gas Vents and Center-Force Ambidextrous Charging This charging handle is a new contender,
Geissele SD-C Super Dynamic Combat 4.5 Pound Two Stage AR-15 Trigger

Geissele SD-C Super Dynamic Combat 4.5lb 2-Stage AR-15 Trigger

$250.00
2-Stage Trigger Built For Combat The Geissele SD-C (Super Dynamic Combat) Trigger is engineered

Faxon Firearms 5.56 M16 Complete Bolt Carrier Group - Chameleon...

(3)
$184.00
An Exceptional BCG Upgrade with A Unique Chameleon PVD Finish For 556 Rifles This
Battle Arms Development Enhanced AR-15 Takedown and Pivot Pin Kit - AT3 Tactical

Battle Arms Development Enhanced AR-15 Takedown and Pivot Pin Kit

(1)
$29.95
Battle Arms Development Enhanced AR-15 Takedown and Pivot Pins The Battle Arms Development Enhanced
Grovtec AR15 Rifle Barrel Thread Protector - 1/2x28 and 5/8x24

Grovtec AR-15 Rifle Barrel Thread Protector - 1/2x28 and 5/8x24

$11.99
Grovtec AR15 Rifle Barrel Thread Protector – 1/2×28 and 5/8×24 Protect your rifle’s bare
LBE Unlimited AR-15 Barrel Nut

LBE Unlimited AR-15 Barrel Nut

(2)
$10.99
LBE Unlimited Standard AR15 Barrel Nut Compatible with any standard AR-15 upper, the LBE
AT3™ Flip-Up Spring-Assisted Backup Iron Sights - Front & Rear Set - Same Plane

AT3™ Flip-Up Spring-Assisted AR-15 Backup Iron Sights - Front &...

(20)
$44.99$38.24
Spring loaded AR 15 iron sights, designed for quick deployment. These sights are sleek
Magpul MS3 Multi Mission Sling - Gen 2 - MAG514

Magpul MS3 Multi Mission Sling - Gen 2 - MAG514

(9)
$47.45
Weapon-Retention Solution For Tactical Environments And Missions The Magpul MS3 Multi-Mission Sling was designed
Black Rain Ordnance Adjustable .750 Gas Block

Black Rain Ordnance AR-15 Gas Block - Adjustable - .750"...

(10)
$39.99
Lightweight & Durable Gas Block For .750 Barrels The Black Rain Ordnance Adjustable .750

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...