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J&E Machine Tech A2 Buffer Tube Combo Kit
$44.99 $29.52 Save 34%
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buffer and spring

by Luis Figueroa, Verified Owner from MD, United States Written on July 21, 2026
Worked perfect and now my AR works great. No issues at all!
Would recommend: Yes
Was it helpful to you? Yes | No

Not as described missing the screws and does not fit a rifle stock

by Johnny, Verified Owner from CA, United States Written on May 27, 2026
Would not recommend missing screws that description states are included does not fit rifle stock very cheaply made
Pros:
  • ZERO
Cons:
  • Cheap
  • does not fit
  • Missing screws
Best Used for:
  • Absolutely nothing
Would recommend: No
Was it helpful to you? Yes | No

Works great as a kit

by GD, from CA, United States Written on December 15, 2025
Works great as a kit, no problem installing it. Fast shipping and good value!
Would recommend: Yes
Was it helpful to you? Yes | No

Great Kit, great quality and good for the value

by Luke, from IN, United States Written on September 4, 2025
Great kit, comes with everything show on the picture. I have no complains!
Would recommend: Yes
Was it helpful to you? Yes | No

Basic part- works like it should

by Rick, Verified Owner from CA, United States Written on October 21, 2024
This is just a regular buffer tube kit. Nothing fancy. It fits and runs perfectly.
Would recommend: Yes
Was it helpful to you? Yes | No

A2 buffer tube combo

by Garrett Slavik, Verified Owner from OK, United States Written on September 29, 2024
Parts came in good condition fits as expected. Kinda hard to mess up a tube and spring
Would recommend: Yes
Was it helpful to you? Yes | No

J&E Machine Tech A2 Buffer Tube Combo Kit

by jsp023, Verified Owner from NJ, United States Written on August 10, 2024
Good quality kit at a good price. Fit well and great fro a rifle length build.
Best Used for:
  • Rifle length barrels
Would recommend: Yes
Was it helpful to you? Yes | No

Good products

by Brewer, from AR, United States Written on March 31, 2024
Bolt was to long.had to cut it off about 3/16. Other than that its great product
Would recommend: Yes
Was it helpful to you? Yes | No

J&E Machine Tech A2 Buffer Tube Combo Kit AR15 .223/.556 WILL NOT WORK

by OBZ, Verified Owner from NJ, United States Written on August 1, 2019
I purchased this tube and recoil spring/buffer for a 762 build. After opening the package I noticed that this spring felt very heavy.
I proceeded to finish the build using this spring and buffer tube.
Well I guess you know the outcome, it did not cycle.
After measuring the spring and comparing it to a std mil spec AR15 223/556 I noticed a big difference in the coil spring wire diameter.
It measured .080 mind you , a std AR15 .223/.556 measures .074. It might not seem a lot, (.006) but when you are compressing the spring to a specific length, it matters. It took almost 35% more pressure to collapse the spring to be equal to a .223/.556

I have read other reviews stating this kit works great.
I think this kit had the wrong spring
In my opinion, this spring will only work on a 308
I will contact Optics Planet to see if they will exchange or refund my purchase
Pros:
  • Nice Kit
Cons:
  • WILL NOT WORK ON A 223/556 or 762
Best Used for:
  • Unknown
Would recommend: No
0 of 3 found the following review helpful.
Was it helpful to you? Yes | No

all around satisfied

by becky, from AZ, United States Written on June 12, 2019
I was pleased with what I received. The product is very affordable and I didn't seem to have any cycling issue or malfunctions with my rifle.
I would recommend.
The buffer tube is well machined and simple to install.
I will definitely purchase another for my next build
Would recommend: Yes
Was it helpful to you? Yes | No
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Last updated 2025-11-12 UTC.