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Fostech MACH-2 AR-15 Tactical Rail Up to 17% Off w/ Free S&H — 9 models

Fostech MACH-2 AR-15 Tactical Rail, 7in, Tungsten, 6705-TUN
Fostech MACH-2 AR-15 Tactical Rail, 7in, Black, 6705-BLK
Fostech MACH-2 AR-15 Tactical Rail, 10in, Tungsten, 6701-TUN
Fostech MACH-2 AR-15 Tactical Rail, 10in, Black, 6701-BLK
Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
Fostech MACH-2 AR-15 Tactical Rail, 13in, Tungsten, 6700-TUN
Fostech MACH-2 AR-15 Tactical Rail, 7in, Tungsten, 6705-TUN
Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
Fostech MACH-2 AR-15 Tactical Rail, 7in, Tungsten, 6705-TUN
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Fostech MACH-2 AR-15 Tactical Rail, 7in, Tungsten, 6705-TUN
Fostech MACH-2 AR-15 Tactical Rail, 7in, Black, 6705-BLK
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Fostech MACH-2 AR-15 Tactical Rail, 7in, Black, 6705-BLK
Fostech MACH-2 AR-15 Tactical Rail, 10in, Tungsten, 6701-TUN
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Fostech MACH-2 AR-15 Tactical Rail, 10in, Tungsten, 6701-TUN
Fostech MACH-2 AR-15 Tactical Rail, 10in, Black, 6701-BLK
4 of 10 images
Fostech MACH-2 AR-15 Tactical Rail, 10in, Black, 6701-BLK
Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
5 of 10 images
Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
Fostech MACH-2 AR-15 Tactical Rail, 13in, Tungsten, 6700-TUN
6 of 10 images
Fostech MACH-2 AR-15 Tactical Rail, 13in, Tungsten, 6700-TUN
Fostech MACH-2 AR-15 Tactical Rail, 7in, Tungsten, 6705-TUN
7 of 10 images
Fostech MACH-2 AR-15 Tactical Rail, 7in, Tungsten, 6705-TUN
Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
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Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
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Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK
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Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK

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Questions & Answers
What is the overall weight of the handguard, barrel nut and any other mounting hardware?

My 13 inch rail weighs 5.4 ounces with all hardware included

by dejo, Verified Owner, June 16, 2023
See 3 More Answers
In addition to Patrick's question already asked, what is the inner diameter (for a recessed blast shield, suppressor, or linear comp)? Expert Answer

FosTech Outdoors does not provide the internal diameter of their MACH-2 AR-15 Tactical Rails. I'd recommend reaching out to them directly for more information. Their contact info is linked below:
https://fostech.com/about-fostech-inc/

by Ethan, Gear Expert, July 7, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Fos-Tech Mach 2 Handguard by T.Bat, Verified Owner, October 14, 2025
Overall a. goid lightweight handguard. My only gripe is they didn't include or mention the barrel nut wrench needed. 1-1/8 is what you will need
1/1 found this helpful
Most Recent Reviews
Very Light Weight Handguard by Nike Howard, Verified Owner, April 28, 2025
If you are looking for a light weight handguard this is it. It's made from magnesium aluminum alloy so it's very lightweight. It's not as pricey as other named brands but it feels sturdy when c-grip.
Most Recent Reviews
light as a feather by toucan joe, Verified Owner, March 11, 2025
Really nice fit and super light …. I love the top rail design.
Most Recent Reviews
Good for the money, needs slight tweak by capramalice450, Verified Owner, February 27, 2025
Okay so I'm going for a Light weight build and needed a good handguard that was at least 11" and under 1oz per inch. Most everything I found in this category was over 200 and even closer to 300, which is wild for what it is (extruded aluminium) or i...
Read More...
Most Recent Reviews
Fostech rail by Goose, Verified Owner, November 2, 2024
My favorite rail by far. Light and feels great. I will be getting another one.
Most Recent Reviews
Seems to work well. by Nolimitation, Verified Owner, November 13, 2023
This handguard is one of the lightest on the market. Even lighter than some carbon fiber handguards while being a lot lower cost. The machining is not exactly impeccable. I haven't broken or damaged it yet, but I haven't dropped or beaten it up yet. ...
Read More...
Read All 7 Reviews

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Product Info for Fostech MACH-2 AR-15 Tactical Rail

The Fostech Mach-2 LITE rail system is the lightest AR-15 rail system on the market today. Weighing in at nearly 30% lighter the Fostech Mach-2 LITE rail reduces the weight of your next build! You won't believe the weight difference when you get this rail!image

Specifications for Fostech MACH-2 AR-15 Tactical Rail:

Manufacturer: Fostech
Fabric/Material: Lite Alloy
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Gun Rail: Picatinny
Mount Type: M-LOK
Quantity: 1

Features of Fostech MACH-2 AR-15 Tactical Rail

  • Lightweight

Package Contents:

  • Fostech MACH-2 AR-15 Tactical Rail

Fostech MACH-2 AR-15 Tactical Rail Orderable Models

List of Orderable Models

  • Fostech MACH-2 AR-15 Tactical Rail, 7in, Tungsten, 6705-TUN , MPN: 6705-TUN , UPC: 082652080364 , Code: 3FS-HZ-TR6700X-6705-TUN
  • Fostech MACH-2 AR-15 Tactical Rail, 10in, Tungsten, 6701-TUN , MPN: 6701-TUN , UPC: 082652080357 , Code: 3FS-HZ-TR6700X-6701-TUN
  • Fostech MACH-2 13 inch AR-15 Tactical Rail, Graphite Black, 6700-BLK , MPN: 6700-blk , UPC: 639266300434 , Code: 3FS-HZ-TR6700X-6700-BLK
  • Fostech MACH-2 AR-15 Tactical Rail, 13in, Tungsten, 6700-TUN , MPN: 6700-TUN , UPC: 082652080340 , Code: 3FS-HZ-TR6700X-6700-TUN
  • Fostech MACH-2 AR-15 Tactical Rail, 7in, Black, 6705-BLK , MPN: 6705-BLK , UPC: 639266300489 , Code: 3FS-HZ-TR6700X-6705-BLK
  • Fostech MACH-2 AR-15 Tactical Rail, 10in, Black, 6701-BLK , MPN: 6701-BLK , UPC: 082652075179 , Code: 3FS-HZ-TR6700X-6701-BLK
  • Fostech MACH-2 7 inch AR-15 Tactical Rail, Flat Dark Earth, 6705-FDE , MPN: 6705-FDE , UPC: 639266300519 , Code: 3FS-HZ-TR6700X-6705-FDE
  • Fostech MACH-2 10 inch AR-15 Tactical Rail, Flat Dark Earth, 6701-FDE , MPN: 6701-FDE , UPC: 082652075209 , Code: 3FS-HZ-TR6700X-6701-FDE
  • Fostech MACH-2 13 inch AR-15 Tactical Rail, Flat Dark Earth, 6700-FDE , MPN: 6700-FDE , UPC: 639266300458 , Code: 3FS-HZ-TR6700X-6700-FDE

Fostech MACH-2 AR-15 Tactical Rail Unavailable & Discontinued Models

List of Unorderable Models

  • Fostech MACH-2 10 inch AR-15 Tactical Rail, OD Green, 6701-OD , MPN: 6701-OD , UPC: 082652075186 , Code: 3FS-HZ-TR6700X-6701-OD
  • Fostech MACH-2 7 inch AR-15 Tactical Rail, OD Green, 6705-OD , MPN: 6705-OD , UPC: 639266300496 , Code: 3FS-HZ-TR6700X-6705-OD
  • Fostech MACH-2 7 inch AR-15 Tactical Rail, Patriot Brown, 6705-PB , MPN: 6705-PB , UPC: 639266300526 , Code: 3FS-HZ-TR6700X-6705-PB
  • Fostech MACH-2 13 inch AR-15 Tactical Rail, OD Green, 6700-OD , MPN: 6700-OD , UPC: 639266300441 , Code: 3FS-HZ-TR6700X-6700-OD
  • Fostech MACH-2 10 inch AR-15 Tactical Rail, Sniper Grey, 6701-SG , MPN: 6701-SG , UPC: 082652075193 , Code: 3FS-HZ-TR6700X-6701-SG
  • Fostech MACH-2 10 inch AR-15 Tactical Rail, Patriot Brown, 6701-PB , MPN: 6701-PB , UPC: 082652075216 , Code: 3FS-HZ-TR6700X-6701-PB
  • Fostech MACH-2 13 inch AR-15 Tactical Rail, Sniper Grey, 6700-SG , MPN: 6700-SG , UPC: 639266300465 , Code: 3FS-HZ-TR6700X-6700-SG
  • Fostech MACH-2 13 inch AR-15 Tactical Rail, Patriot Brown, 6700-PB , MPN: 6700-PB , UPC: 639266300472 , Code: 3FS-HZ-TR6700X-6700-PB
  • Fostech MACH-2 7 inch AR-15 Tactical Rail, Sniper Grey, 6705-SG , MPN: 6705-SG , Code: 3FS-HZ-TR6700X-6705-SG
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Last updated 2026-07-05 UTC.