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Questions & Answers
So if your barrel has a gas block Journal under .936 this won't work? Confused on why that matters. Manufacturer Answer

If your barrel fits AR10 or LR-308, it should work with the barrel. Usually .936 gas block is for 308.

by Charles Shi, Manufacturer, February 19, 2025
What about this rod makes it only usable for a barrel with a journal of .936? Manufacturer Answer

Usually it works .308 barrel with any journal, does not matter .936 or .750 or .875.

by Charles Shi, Manufacturer, February 26, 2025
Customer Reviews
Helpful Positive Review
When you get this, the notch on the top will be flush with the rod. You'll need to loosen the set screw on the side to get it to come out. Then screw in the set screw and allow the tab to sit on top. When you slide it into the receiver, it will a...
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13/13 found this helpful
Helpful Positive Review
Great Action Rod by Collin Pruitt, Verified Owner, April 5, 2025
Worked perfect in my AR10 build. If you're confused about the .936 gas journal, all it means is that it will work with AR10 barrels/uppers and not AR15. Has nothing to do with the gas port size on the barrel. (So will work with an ar10 barrel with a ...
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6/6 found this helpful
Helpful Positive Review
As an owner of the Geissele reaction rod, I really like how sturdy and heavy it is. But, it will not work on a low profile dpms. This is the only one that I could find due to the adjustable block. The only reason I don't give a five stars is because ...
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1/3 found this helpful
Helpful Positive Review
Excellent Product by Billy, November 7, 2023
I have an Armalite AR10. I needed to replace the stock clamshell handguard with a free-float. The barrel nut was installed at about 956 ft-lb! This reaction bar held the upper SOLID. Great product!
1/1 found this helpful
Helpful Positive Review
D Douglas 269 by D Douglas, Verified Owner, April 26, 2025
Very happy with it , works great! I have run it up to 80 FT POUNDS with no deformation on the barrel extension lugs (I was told it was able to handle 95 ) so being aluminum, I am extremely happy with it and the price point! I will be purchasing the ...
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1/1 found this helpful
Helpful Positive Review
I bought two of these: 1 for the AR15 and 1 for the AR10/LR-308 platform. Both of these are very solid and work well with my vise in holding my AR uppers in place while I do maintenance on them. These rods are definitely nice to have especially when...
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3/3 found this helpful
Read All 40 Reviews

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Product Info for Presma .308 Barrel Vise Block Rod w/ Torque Block for .936

Really cool tool for working on your AR build. This multi-use tool helps with ease of installation of barrel nuts without scratching the exterior. Also a great way to securely hold your AR's upper receiver assembly for maintenance and upgrades. Now with newly added Torque Block, for those really extra heavy duty jobs.image

These tools are made to grip in a bench vise so that the rod is either vertical or horizontal. You then slide the upper receiver onto the reaction bar. The splines on the front of the rod enter the into barrel extension for a secure hold and fit. Ready for tuning, it's that simple. 12in in Length. Color anodized. Tips are 7075 Aluminum and base is 6061. Will handle 90+ ft lbs of torque.

Specifications for Presma .308 Barrel Vise Block Rod w/ Torque Block for .936:

Manufacturer: Presma
Finish: Anodized
Gun Model: DPMS LR-308, AR-10
Gun Type: Rifle
Fabric/Material: 7075-T6 Aluminum, 6061-T6 Aluminum
Condition: New
Projectile Caliber: .308 Caliber
Quantity: 1
Length: 12 in

Package Contents:

  • Presma .308 Barrel Vise Block Rod w/ Torque Block for .936

Presma .308 Barrel Vise Block Rod w/ Torque Block for .936 Orderable Models

List of Orderable Models

  • Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Black, AV3-G2 , MPN: AV3-G2 , Code: 2HC-RB0-VB308TB-AV3-G2
  • Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Silver, AV3-G2-S , MPN: AV3-G2-S , UPC: 840354128339 , Code: 2HC-RB0-VB308TB-AV3-G2-S
  • Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Red, AV3-G2-R , MPN: AV3-G2-R , UPC: 840354128322 , Code: 2HC-RB0-VB308TB-AV3-G2-R
  • Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Blue, AV3-G2-B , MPN: AV3-G2-B , UPC: 840354128308 , Code: 2HC-RB0-VB308TB-AV3-G2-B
  • Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Golden, AV3-G2-G , MPN: AV3-G2-G , UPC: 840354128315 , Code: 2HC-RB0-VB308TB-AV3-G2-G

Presma .308 Barrel Vise Block Rod w/ Torque Block for .936 Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Black, AV3-G2 , MPN: AV3-G2-EDEMO , Code: 2HC-RB0-VB308TB-AV3-G2-EDEMO-IN-D
  • USED, Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Black, AV3-G2 , MPN: AV3-G2-EDEMO , Code: 2HC-RB0-VB308TB-AV3-G2-EDEMO-IN-C
  • USED, Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Red, AV3-G2-R , MPN: AV3-G2-R-EDEMO , Code: 2HC-RB0-VB308TB-AV3-G2-R-EDEMO-RE-A
  • USED Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Black, AV3-G2, EDEMO2, Used, Condition Like New , MPN: AV3-G2-EDEMO2 , Code: 2HC-RB0-VB308TB-AV3-G2-EDEMO2
  • USED Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Black, AV3-G2, EDEMO3, Condition Like New, Inspect and Rebox , MPN: AV3-G2-EDEMO3 , Code: 2HC-RB0-VB308TB-AV3-G2-EDEMO-RE-A
  • USED Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Black, AV3-G2, EDEMO4, Excellent, Inspect and Rebox , MPN: AV3-G2-EDEMO4 , Code: 2HC-RB0-VB308TB-AV3-G2-EDEMO-RE-B
  • USED Presma AR-10/LR-308 .308 Barrel Vise Block Rod with Torque Block for .936, Silver, AV3-G2-S, EDEMO2, Condition Fair, Other , MPN: AV3-G2-S-EDEMO2 , Code: 2HC-RB0-VB308TB-AV3-G2-S-EDEMO-OT-D
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