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BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
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BROWNELLS - BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black

10 Reviews
BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black
Brownells #
430106937
MFR #
OEM-AR-LREF
UPC
050806000674
$59.99
Coupon Code
Purchase Limit Help

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Standard Shipping Estimated Delivery
Estimated delivery: Oct 23
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International purchase information

Specifications
Color:
Black
Item Height (Inches):
5.410
Item Width (Inches):
1.700
Item Length (Inches):
7.090
Material:
Aluminum
Quantity:
1
Restriction
Gun Tool Restriction:
Yes
View US State Restrictions
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International purchase information

What is the BROWNELLS - BRN AR-15 Lower Receiver/Buffer Tube Vise Fixture, Black?
AR-15 LOWER RECEIVER BUFFER TUBE VISE FIXTURE


Keep your buffer tube straight while tightening your castle nut.


Here at Brownells, we know how hard it is when tightening the lower receiver castle nut to keep the buffer tube from rotating during building or maintenance of an AR-15 platform. That is why we have developed the AR-15 Lower Receiver Extension Vise Fixture. Made from anodized aluminum, place the fixture in your favorite vice, like the Brownells Bench Vise, and tighten it down. Insert the lower onto the fixture with the buffer tube through the sliding tube support. Move the sliding tube support toward the receiver leaving enough room for an armorer’s wrench. Adjust the support for mil-spec and commercial tubes simply by using an adjustment screw on top of the sliding tube support. Once adjusted and tightened, ensure your buffer is aligned and set your castle nut with confidence to the proper torque specifications.


Specifications
  • Holds Mil-Spec and Commercial AR-15/M4 Buffer Tubes
  • Hard coated anodized aluminum
  • Overall dimensions 7.09” L x 5.41” H

See all of our AR15s and AR15 parts here.

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AR-15 LOWER RECEIVER BUFFER TUBE VISE FIXTURE REVIEWS

4.3
10 Reviews
5 Stars
60%
4 Stars
20%
3 Stars
10%
2 Stars
10%
1 Stars
0%
Reviews Summary
Overall, customers are very pleased with the AR-15 Lower Receiver Buffer Tube Vise Fixture, praising its sturdy build and effectiveness in keeping components aligned during assembly. While many appreciate its value for the price, a few reviewers note concerns about some play in the design, which can affect accuracy. However, the majority find it essential for achieving precise results.
What Reviewers Are Saying
Product Effectiveness
67%
Reviewers consistently highlight the effectiveness of the vise fixture in aligning and securing the buffer tube and castle nut, significantly improving the installation process. Many note that it prevents movement during torquing, resulting in accurate assemblies.
Build Quality
63%
Compliments on the build quality are prominent among reviewers. The fixture is described as heavy-duty and sturdy, indicating that it is capable of withstanding repeated use without significant wear or issues, thus supporting its value.
Value for Money
52%
Multiple reviewers mention that the product offers excellent value for its price, especially when compared to more expensive alternatives. Users feel that it performs well enough to justify its cost, making it a worthwhile investment for anyone building ARs.
Design Issues
30%
Some users raised concerns about the design, specifically mentioning too much play when securing the buffer tube. This sloppiness can lead to inaccuracies in alignment, suggesting that further refinement could enhance the product's overall utility.
5
Slick Trick
This thing works great.I probley want buy another one, this thing should outlast me.
by Steven C. on March 31, 2026
Verified Purchase
Was this review helpful? 0
5
great product
its heavy duty, works as it should, and really handy... this makes the buffer tube clocked perfectly, and very happy with results... I would recommend this to anyone who wants to make sure their buffer tube is aligned...
Would you recommend this? Yes, I would recommend to a friend
by David T. on January 23, 2026
Verified Purchase
Was this review helpful? 0
5
Lower Extension Tool
This is an excellent tool that insures perfectly clocked Lower Reciever Extension (Buffer Tube) and castle nut torque without movement. Well worth the price!!
Would you recommend this? Yes, I would recommend to a friend
by HENRY K. on December 15, 2025
Verified Purchase
Was this review helpful? 1
5
Perfect tool!
So glad we saw this tool, wish we would have had it years ago, this works perfectly!
Would you recommend this? Yes, I would recommend to a friend
by MIKE H. on October 15, 2025
Verified Purchase
Was this review helpful? 2
5
Well built
Very well built and holds the lower receiver and buffer tube securely, while you tighten the castle nut. This fixture can prevent damaging the buffer tube threads, while applying torque. I found that coating the buffer tube portion with oil will help prevent scratching the surface of the tube. This is also an excellent fixture for when staking the castle nut.
Would you recommend this? Yes, I would recommend to a friend
by BARRY S. on July 04, 2025
Verified Purchase
Was this review helpful? 2
View All 10 Reviews
Customer Questions
0 Questions