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Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal Up to 14% Off w/ Free Shipping — 10 models

Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Blue, MILTUBESET-308-BLUE
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Clear, MILTUBESET-308-CLEAR
GUNTEC USA AR10 Mil-Spec Buffer Tube Set,.308 Cal MILTUBESET-308
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Purple, MILTUBESET-308-PURPLE
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Red, MILTUBESET-308-RED
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Green, MILTUBESET-308-GREEN
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Grey, MILTUBESET-308-GREY
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Bronze, MILTUBESET-308-BRZ
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Gold, MILTUBESET-308-GOLD
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Cerakote Flat Dark Earth, MILTUBESET-308-FDE
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Blue, MILTUBESET-308-BLUE
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Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Blue, MILTUBESET-308-BLUE
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Clear, MILTUBESET-308-CLEAR
2 of 10 images
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Clear, MILTUBESET-308-CLEAR
GUNTEC USA AR10 Mil-Spec Buffer Tube Set,.308 Cal MILTUBESET-308
3 of 10 images
GUNTEC USA AR10 Mil-Spec Buffer Tube Set,.308 Cal MILTUBESET-308
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Purple, MILTUBESET-308-PURPLE
4 of 10 images
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Purple, MILTUBESET-308-PURPLE
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Red, MILTUBESET-308-RED
5 of 10 images
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Red, MILTUBESET-308-RED
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Green, MILTUBESET-308-GREEN
6 of 10 images
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Green, MILTUBESET-308-GREEN
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Grey, MILTUBESET-308-GREY
7 of 10 images
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Grey, MILTUBESET-308-GREY
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Bronze, MILTUBESET-308-BRZ
8 of 10 images
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Bronze, MILTUBESET-308-BRZ
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Gold, MILTUBESET-308-GOLD
9 of 10 images
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Gold, MILTUBESET-308-GOLD
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Cerakote Flat Dark Earth, MILTUBESET-308-FDE
10 of 10 images
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Cerakote Flat Dark Earth, MILTUBESET-308-FDE

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Questions & Answers
is the Spring stainless steel? Expert Answer

Unfortunately, Guntec USA has not provide information regarding what material the spring is. I suggest reaching out to them directly to request more information.

by Bethany Kopel, Gear Expert, March 3, 2021
See 1 More Answer
Is this for a carbine stock? Expert Answer

Yes, the Guntec USA AR-10 Mil-Spec Buffer Tube Set will work with a Mil-Spec Carbine Stock.

by Hunter, Gear Expert, April 19, 2023
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review GUNTEC USA AR-10 Mil-Spec Buffer Tube Set,.308 Cal by Joseph Erdie, Verified Owner, January 8, 2017
The Buffer Tube set fit my AR build perfectly. Would recommend to anyone building a 308 AR. Fit the mil-spec stock that I'd selected perfectly. Additionally it fit the lower and upper that i'd selected. At the range the system worked perfectly.
3/3 found this helpful
Helpful Positive Review Just what I needed! by Pistolero, September 9, 2020
Was building an AR10 recently and discovered I need a buffer tube and spring to complete it. Optics Planet had just what I need. AR parts have become scarce recently during the Wuhan China virus. The price was fair and shipping fast.
3/5 found this helpful
Helpful Positive Review Economical AR-308 buffer tube assy mil spec by Toolman1JB2, July 1, 2018
A bit shorter than factory dpms but works fine,! Great for replacing the fixed stock with 6 position stocks, this option lets you pick a lot of different styles of adjustable stock not have to choose the same style but works well with all mil spec st...
Read More...
1/2 found this helpful
Helpful Negative Review Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal by Mike, Verified Owner, April 23, 2023
This unit has a 3.8oz buffer. It would not cycle my rifle. I had to make purchase of a 5.0oz buffer and use an Aero Spring to make it go like it should. This might have worked if the buffer were heavier.
2/2 found this helpful
Most Recent Reviews Nice quality by Dave, Verified Owner, July 18, 2025
Put this on a aero m5 lower and the look and feel is real nice the buffer and spring are quality as well.
Most Recent Reviews great servuce by Daniel D, Verified Owner, May 30, 2025
Once again optics planet delivers great service and great products!! I highly recommend using optics planet!!
Read All 16 Reviews
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Product Info for Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal

Mil-Spec Buffer Tube Complete Kit End Plate, Castle Nut, 308 CAR Short Buffer, & Spring T6 Aluminum Six Position Buffer Tube For .308 Caliberimage

Specifications for Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal:

Manufacturer: Guntec USA
Fabric/Material: T6 Aluminum
Gun Make: AR Platform
Gun Model: AR-10
Condition: New
Weight: 10 oz

Features of Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal

  • Total Weight of Kit: 10 oz
  • End Plate
  • Castle Nut
  • 308 CAR Short Buffer, & Spring
  • Six Position Buffer Tube

Package Contents:

  • Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal

Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal Orderable Models

List of Orderable Models

Guntec USA AR-10 .308 Cal Mil-Spec Buffer Tube Set, 6-position, End Plate/Castle Nut/308 CAR Short Buffer/Spring, Black, MILTUBESET-308 , MPN: MILTUBESET-308 , UPC: 714569644123 , Code: 2AH-BFA-G3UM-EE
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Purple, MILTUBESET-308-PURPLE , MPN: MILTUBESET-308-PURPLE , UPC: 752574664286 , Code: 2AH-BFA-G3UM-MILTUBESET-308-PURPLE
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Red, MILTUBESET-308-RED , MPN: MILTUBESET-308-RED , UPC: 752574664309 , Code: 2AH-BFA-G3UM-MILTUBESET-308-RED
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Green, MILTUBESET-308-GREEN , MPN: MILTUBESET-308-GREEN , UPC: 752574664262 , Code: 2AH-BFA-G3UM-MILTUBESET-308-GREEN
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Bronze, MILTUBESET-308-BRZ , MPN: MILTUBESET-308-BRZ , UPC: 752574664248 , Code: 2AH-BFA-G3UM-MILTUBESET-308-BRZ
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Cerakote Flat Dark Earth, MILTUBESET-308-FDE , MPN: MILTUBESET-308-FDE , UPC: 752574664323 , Code: 2AH-BFA-G3UM-MILTUBESET-308-FDE
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Blue, MILTUBESET-308-BLUE , MPN: MILTUBESET-308-BLUE , UPC: 752574664316 , Code: 2AH-BFA-G3UM-MILTUBESET-308-BLUE
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Clear, MILTUBESET-308-CLEAR , MPN: MILTUBESET-308-CLEAR , UPC: 752574664293 , Code: 2AH-BFA-G3UM-MILTUBESET-308-CLEAR
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Grey, MILTUBESET-308-GREY , MPN: MILTUBESET-308-GREY , UPC: 752574664255 , Code: 2AH-BFA-G3UM-MILTUBESET-308-GREY
Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal, Anodized Gold, MILTUBESET-308-GOLD , MPN: MILTUBESET-308-GOLD , UPC: 752574664279 , Code: 2AH-BFA-G3UM-MILTUBESET-308-GOLD

Guntec USA AR-10 Mil-Spec Buffer Tube Set, .308 Cal Unavailable & Discontinued Models

List of Unorderable Models

Demo, Guntec USA AR-10 .308 Cal Mil-Spec Buffer Tube Set, 6-position, End Plate/Castle Nut/308 CAR Short Buffer/Spring, Black, MILTUBESET-308 , MPN: MILTUBESET-308-DEMO , Code: 2AH-BFA-G3UM-DEMO
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