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Questions & Answers
Will this block fit a Rock River LAR-8 (AR-10) securely? Expert Answer

Yes, this should be compatible and fit securely.

by Patrick, Gear Expert, November 15, 2021
Does this vise block "lock" into the receiver well? Expert Answer

Yes, this should lock up well with a standard AR-10 lower.

by Julia, Gear Expert, December 22, 2020
Customer Reviews
Helpful Positive Review
This mag block works well for it's intended purpose. Holding your rifle in a vice. DO NOT use this block to hold your rifle while you screw on or off a muzzle device. That's bad, ok. It could bend your upper.
6/6 found this helpful
Helpful Positive Review
Works for me by VonWhip, Verified Owner, March 23, 2022
When you need to secure your AR10 lower receiver to a vise this will do the job well. It’s definitely a big chunk of polymer but it does what it’s supposed to do. It’s not a super tight fit but tight enough.
2/2 found this helpful
Helpful Positive Review
Perfect fit by Tom Finke, Verified Owner, August 16, 2020
Ordered this for ar10 platform. Received this pretty quick it went out the day after I ordered it. Went in mag well four different ways but only one way locked it in one way. Solid piece to use in a vice.
1/1 found this helpful
Helpful Positive Review
Handy Tool by JT, Verified Owner, April 1, 2021
I have used this block for a few AR builds now, and it has held up quite well. The most important thing is it can handle the torque for the buffer tube castle nut. I primarily used this block on Aero Precision lowers.
1/1 found this helpful
Helpful Positive Review
Very handy by Bighurt, August 16, 2016
This is the way to go. Fits well in my Pro Fab lower. If you get this one for 308 you can modify one side to fit AR15 instead of spending twice as much. Still will work fine for what I need after modification.
2/2 found this helpful
Helpful Positive Review
Pro Mag AR10 Lower Receiver Vise Block by bsk, Verified Owner, March 19, 2019
I purchased this item to assemble my Aero Precision DPMS/SR25 based rifle. The vise block fit the lower perfectly. The magazine catch engaged the slot very well and held the lower securely. I would definitely recommend this item fro use in assembly a...
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1/1 found this helpful
Read All 41 Reviews
Fabric/Material:
Glass-Filled Nylon
Color:
Black
Condition:
New

Code: KA0-RB0-PM245-EE

MPN: PM245

UPC: 708279010187

List: $19.99
$19.89

Product Info for Pro Mag AR10 Lower Receiver Vise Block Kit PM245

Heavy-duty block securely clamps into the magwell of the lower receiver of AR-10 / .308 caliber AR-type rifles to prevent damage or movement during repair, assembly and cleaning. Double sided design fits Armalite, DPMS, Remington, SR-25 and many other variants. Constructed of impact resistant glass-filled nylon.image

Specifications for Pro Mag AR10 Lower Receiver Vise Block Kit PM245:

Mfg Item Num:  PM245
Type:  ACCESSORIES - GUN ACCESSORIES - GUNSMITHING TOOLS
Master Model Header:  AR10 Lower Receiver Vise Block Kit

Package Contents:

  • Pro Mag AR10 Lower Receiver Vise Block Kit PM245

Pro Mag AR10 Lower Receiver Vise Block Kit PM245 Orderable Models

List of Orderable Models

  • Pro Mag AR10 Lower Receiver Vise Block Kit, .308 Win, 7.62x51mm NATO, PM245 , MPN: PM245 , UPC: 708279010187 , Code: KA0-RB0-PM245-EE

Pro Mag AR10 Lower Receiver Vise Block Kit PM245 Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Pro Mag AR10 Lower Receiver Vise Block Kit, .308 Win, 7.62x51mm NATO, PM245 , MPN: PM245-EDEMO , Code: KA0-RB0-PM245-EDEMO-RE-C
  • USED Pro Mag AR10 Lower Receiver Vise Block Kit, EDEMO4, Used, Condition Fair , MPN: PM245-EDEMO4 , Code: KA0-RB0-PM245-EDEMO4
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