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Questions & Answers
What is the total height of the gas block? Expert Answer

Dimensions are 7.75 × 4.00 × 1.00 in

by Ryan Tarczynski, Gear Expert, August 2, 2021
What other calibers is this product good for? 300 black out??? Expert Answer

This is not caliber specific. The deciding factor for compatibility will be gas journal diameter. The diameter for this gas block is .875".

by Kurt Colbourne, Gear Expert, March 25, 2021
Customer Reviews
Helpful Positive Review
.458 socom build by Barefoot, Verified Owner, March 27, 2018
Needed a .875 gas block for a 458 socom build. Turned to optics planet and Troy industries. Fit and finish were as I have come to expect, outstanding. OP got it here and the build was completed. I am gonna head to the range today for a test drive
2/2 found this helpful
Helpful Positive Review
Troy .875 Gas Block by Harold, January 27, 2017
Troy's quality is spot on and and I do mean very well made! Nice mill work and a fine finish. I used this on a new build upper and there was no problem getting it on the barrel as I have had with other blocks. This made the build go extremely smooth...
Read More...
1/1 found this helpful
Most Recent Reviews
Great gas block by B, February 2, 2018
Works great. The finish is a nice black that matched my barrel well. It fit nice over my 8.75 barrel not to tight. I did not drill pilot divits in the barrel for the set srews but i did put red loctite on them.
Most Recent Reviews
Troy low profile gas block .875 by Dozer, November 11, 2019
Fit perfectly. Comes with set screws but does not come with roll pen (tension pen) for gas tube. (5/64 - .078) easy to install. Installed on dimpled barrel so I had no problem with alignment. Has Duell set screws.
Most Recent Reviews
Troy industry has block .875 by Dars, July 25, 2018
Great product fit and looks perfectly satisfied with quality of product. I would recommend this gas block. Recently installed went on very easy fit nicely. I have not been able to take it out to the range yet.
Most Recent Reviews
Troy low profile gas block by Jp, May 27, 2018
Awesome product,great company to order from......I’ve ordered many items from optics planet and have never had any issues.will definitely be ordering many more products from them.troy makes very good quality ar15 items with reliability and performanc...
Read More...
Read All 15 Reviews
Gas Block Journal Size-Diameter:
.875 in
Additional Features:
Low Profile
Condition:
New

Code: OY-RGB-SGAS875OOBT00

MPN: SGAS-875-00BT-00

UPC: 812699014578

List: $66.51Save 10%
$59.99

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OP Bucks$1.20

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 Troy .875 Gas Block SGAS875OOBT00

When you're working with a bull barrel, consider the Troy .875 Rifle Gas Block. These easy-to-install AR Gas Blocks from Troy Industries are low profile to allow room for other accessories. Troy .875 Hardened Steel Gas Blocks are precisely machined for excellent fit, flawless function and a tactical look. Pick up a Troy .875 Low Profile Gas Block for your next build.image

Specifications for Troy .875 Gas Block SGAS875OOBT00:

Manufacturer: Troy
Fabric/Material: 4140 Steel
Gas Block Journal Size-Diameter: .875 in
Additional Features: Low Profile
Condition: New
Finish: MIL-STD Manganese Phosphate
Country of Origin: USA

Troy .875 Low Profile Rifle Gas Block SGAS-875-00BT-00:

  • Compatible with bull barrel rifles that have a 0.875 gas block seat and Armalite 0.308 heavy barrel and other calibers.
  • Machined from 4140 pre-hardened steel.
  • Finished with MIL-STD Manganese Phosphate.
  • Gas tube roll pin not included.
  • Easy installation and solid fit.
  • Limited Lifetime Warranty.

Package Contents:

  • Troy .875 Rifle Gas Block SGAS-875-00BT-00

Troy .875 Gas Block SGAS875OOBT00 Orderable Models

List of Orderable Models

  • Troy .875 Gas Block SGAS875OOBT00 , MPN: SGAS-875-00BT-00 , UPC: 812699014578 , Code: OY-RGB-SGAS875OOBT00
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