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Questions & Answers
Will this work on. 300blackout barrel Manufacturer Answer

The Presma .308 Barrel Vise Block Rod with Torque Block for .936" barrels is not designed for .300 Blackout barrels by default, unless your specific .300 BLK barrel has a .936" gas block journal diameter.

by Charles Shi, Manufacturer, May 7, 2025
will this work for 7.62 x 39 mm barrels? Manufacturer Answer

No, the other one will work with.
https://www.opticsplanet.com/presma-308-barrel-vise-block-rod-w-torque-block-for-936.html

by Charles Shi, Manufacturer, February 26, 2025
Customer Reviews
Helpful Positive Review
A must have for building or maintaining ARs by Josh, Verified Owner, November 14, 2021
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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7/8 found this helpful
Helpful Positive Review
Great tool for installing Muzzle devices. by PoorCapitalist, Verified Owner, September 20, 2024
I bought this to install some Dead Air muzzle devices and it was the perfect tool for the job. Puts the Torque where it should go instead of torquing on your upper receiver.
1/1 found this helpful
Helpful Positive Review
Good value piece by Rusty Shackleford, Verified Owner, May 31, 2024
I bought this for the purposes of removing and installing muzzle devices without twisting my receivers and honestly expected less for the price. Its just a aluminium tube with a billet or possibly steel head pinned into the end that sticks in the bre...
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1/1 found this helpful
Helpful Positive Review
Its all about stress... by Broken Monkey, May 8, 2022
The Presma AR-15 .223 Barrel Vise Block Rod w/ Torque Block is well worth the price. I have the Vism upper vice block and it has its uses but for barrel or flash suppressor installs I prefur the Presma. With the Presma rod, I do not have to worry abo...
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4/4 found this helpful
Helpful Negative Review
Update to earlier review by PstCntrl, Verified Owner, June 2, 2026
1. I was wrong on one point: the raised "fin" that slides into gas key channel is not needed for muzzle device installs. So for my purposes this rod is 100% usable. I like the materials and finish. Was able to install a brake and we had it in gnarly ...
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2/2 found this helpful
Most Recent Reviews
Other reviewers mentioned it. This reaction rod is "clocked" - with the raised "fin" it does not fit into the star chamber. My first thought was that my barrel was clocked, but I've tried it in 4 different uppers, and it's the same everywhere. I got ...
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3/4 found this helpful
Read All 36 Reviews
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Product Info for Presma AR-15 .223 Barrel Vise Block Rod w/ Torque Block for .750 Barrels

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. Comes with carrying case/holder.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. 11in in Length. Color anodized. Tips are 7075 Aluminum and base is 6061. Will handle 70+ ft lbs of torque.

Specifications for Presma AR-15 .223 Barrel Vise Block Rod w/ Torque Block for .750 Barrels:

Manufacturer: Presma
Finish: Anodized
Gun Model: AR-15
Gun Type: Rifle
Fabric/Material: 7075-T6 Aluminum, 6061-T6 Aluminum
Condition: New
Projectile Caliber: .223 Caliber
Quantity: 1
Length: 11 in

Package Contents:

  • Presma AR-15 .223 Barrel Vise Block Rod w/ Torque Block for .750 Barrels

Presma AR-15 .223 Barrel Vise Block Rod w/ Torque Block for .750 Barrels Orderable Models

List of Orderable Models

  • Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Black, AV2-G2 , MPN: AV2-G2 , UPC: 840354128247 , Code: 2HC-RB0-TB22BV-AV2-G2
  • Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Silver, AV2-G2-S , MPN: AV2-G2-S , UPC: 840354128285 , Code: 2HC-RB0-TB22BV-AV2-G2-S
  • Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Golden, AV2-G2-G , MPN: AV2-G2-G , UPC: 840354128261 , Code: 2HC-RB0-TB22BV-AV2-G2-G
  • Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Red, AV2-G2-R , MPN: AV2-G2-R , UPC: 840354128278 , Code: 2HC-RB0-TB22BV-AV2-G2-R
  • Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Blue, AV2-G2-B , MPN: AV2-G2-B , UPC: 840354128254 , Code: 2HC-RB0-TB22BV-AV2-G2-B

Presma AR-15 .223 Barrel Vise Block Rod w/ Torque Block for .750 Barrels Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Silver, AV2-G2-S , MPN: AV2-G2-S-EDEMO , Code: 2HC-RB0-TB22BV-AV2-G2-S-EDEMO-RE-B
  • USED, Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Blue, AV2-G2-B , MPN: AV2-G2-B-EDEMO , Code: 2HC-RB0-TB22BV-AV2-G2-B-EDEMO-SC-C
  • USED Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Black, AV2-G2, EDEMO4, Condition Fair, Scratches , MPN: AV2-G2-EDEMO4 , Code: 2HC-RB0-TB22BV-AV2-G2-EDEMO-SC-D
  • USED Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Silver, AV2-G2-S, EDEMO3, Used, Condition Fair , MPN: AV2-G2-S-EDEMO3 , Code: 2HC-RB0-TB22BV-AV2-G2-S-EDEMO3
  • USED Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Blue, AV2-G2-B, EDEMO1, Used, Condition Fair , MPN: AV2-G2-B-EDEMO1 , Code: 2HC-RB0-TB22BV-AV2-G2-B-EDEMO1
  • USED Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Black, AV2-G2, EDEMO3, Condition Parts Only/Salvage, Defective , MPN: AV2-G2-EDEMO3 , Code: 2HC-RB0-TB22BV-AV2-G2-EDEMO-DF-F
  • USED Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Blue, AV2-G2-B, EDEMO2, Used, Condition Like New , MPN: AV2-G2-B-EDEMO2 , Code: 2HC-RB0-TB22BV-AV2-G2-B-EDEMO2
  • USED Presma AR-15 .223 Barrel Vise Block Rod with Torque Block for .750 Barrels, Black, AV2-G2, EDEMO2, Condition Fair, Other , MPN: AV2-G2-EDEMO2 , Code: 2HC-RB0-TB22BV-AV2-G2-EDEMO-OT-D
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Last updated 2026-11-06 UTC.