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VISM AR15 Lower Receiver Vice Block
List: $46.99 $38.99 Save 17%
Compare (0)
Most Helpful Positive Review A great AR tool at a great price!
This AR Receiver vise block tool is used for aligning and clocking the buffer tube to the 6 o'clock position, perfectly every time! It is easy to use, and works. The block is well machined from aluminum block, with rounded corners and a nice anodized blue finish. There is a NcStar video, online that...
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Most Helpful Negative Review A One Trick Pony
This thing does one thing well; it holds the lower and the buffer tube while you torque the castle nut...that's all. Otherwise, it has no further advantage over a mag well vise block. its a pain in the A** to set up and holds the receiver at an odd angle that doesn't line up with the buffer tube cla...
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Lower Vice block

by Cmedling, Verified Owner from TN, United States Written on September 27, 2026
This is a great tool for doing work on your lower. It’s also great for getting the correct alignment on your buffer tube. This is a great product for the price.
Would recommend: Yes
Was it helpful to you? Yes | No

Lower Receiver Vice Block

by Fast And Accurate, Verified Owner from SC, United States Written on September 27, 2026
This tools is really amazing when working on a castle nut. The vice block provides a solid hold on the lower receiver so that the buffer tube is aligned with the lower thus providing a sold hold while torquing the castle nut.
Pros:
  • Solid hold
Cons:
  • nothing
Best Used for:
  • Torquing the castle nut
Would recommend: Yes
Was it helpful to you? Yes | No

Great for the money

by Mario, Verified Owner from AK, United States Written on September 24, 2026
Compared to the exponentially more expensive competitors, this buffer tube alignment tool is equally as effective and substantially greater value. It does the job for so much less money. Build quality is exceptional. Held my lower and buffer tube in perfect alignment while I torqued the castle nut and staked it in place. I spent an hour the next afternoon taking apart all of my lowers and realigning all of my buffer tubes. I had no idea how crooked they were until I got this tool. WORTH. EVERY. PENNY.
Pros:
  • value
  • Price
  • Build quality
Cons:
  • None
Best Used for:
  • Lower assembly
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

vice block

by chance, Verified Owner from FL, United States Written on September 3, 2026
great tool great quality makes working on lowers easy well built great product
Would recommend: Yes
Was it helpful to you? Yes | No

lower receiver vice

by skippy, Verified Owner from NC, United States Written on August 23, 2026
this works perfect for holding your lower steady and perfectly aligning you buffer tube while you tighten the castle nut!!
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect lower receiver alignment tool!

by Mike G, Verified Owner from KY, United States Written on August 22, 2026
Excellent price and excellent function. What’s more to ask? I’ve used it to assemble several lowers and it keeps the buffer tube straight while you torque the castle nut to proper torque.
Would recommend: Yes
0 of 1 found the following review helpful.
Was it helpful to you? Yes | No

GREAT TOOL

by Lloyd Story, Verified Owner from OK, United States Written on August 14, 2026
WORKS AS VERY WELL AND MADE TO LAST JUST HAT I NEEDED
Would recommend: Yes
Was it helpful to you? Yes | No

a tool for 1 thing but it works

by Hotdogjr, Verified Owner from MD, United States Written on July 19, 2026
Do you want your stock crooked? This jig holds the buffer tube and receiver so when the castle nut is torqued it doesn't clock the tube to the right. It's not the sturdiest feeling but for the $$$ and if you're into every tool to build an AR right, this is 1 option.
Would recommend: Yes
Was it helpful to you? Yes | No

Works great

by Mat Fielder, from MT, United States Written on July 1, 2026
A friend of mine is a custom rifle builder and he recommended this to me as this is what he uses when building ar’s so I got it and it works great for keeping everything aligned using it on 2 builds and fixing a out of the box ar that was horribly misaligned from the factory would definitely recommend for builds
Pros:
  • easy to use
  • Quality construction
  • good finish
Cons:
  • None
Best Used for:
  • Any AR application
Would recommend: Yes
Was it helpful to you? Yes | No

Keeps it straight

by Gregory Henson, Verified Owner from TX, United States Written on June 10, 2026
Really like this. It will hold the buffer tube and lower exactly how you put it in the jig, so make sure it is exactly straight.
Pros:
  • keeps tube straight
Cons:
  • None
Best Used for:
  • installing buffer tubes.
Would recommend: Yes
Was it helpful to you? Yes | No
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Last updated 2025-11-12 UTC.