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TRYBE Defense AR-15 Mil-Spec 5.56 NATO/.223 Rem/.300 Blackout Complete Bolt Assembly
$89.00 $84.99 Save $4.01
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Most Helpful Positive Review Perfect for any job
This worked flawlessly on both 300B and 5.56 builds. The finish is very nice. The coating is evenly distrubuted. The machine work is great and its made out of very high quality steel. I gound this in a sale, but its equally as impressive as the AeroP products.
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Ar 15 bolt

by Doazer, Verified Owner from CO, United States Written on August 18, 2025
Perfect fit the headspace was exact have taken it out and fired it cycles like it’s supposed to great fit for the gun
Pros:
  • Perfect Fit
Cons:
  • None
Best Used for:
  • Target shooting
Would recommend: Yes
Was it helpful to you? Yes | No

Excellent budget spare to have

by PstCntrl, Verified Owner from UT, United States Written on July 13, 2025
I got this, along with the cam pin, to have as backup. I have a simple Diamondback DB15, along with a full spare nitride BCG by Trybe. So I installed this bolt and cam pin into the Trybe BCG and put a few mags through it the other day. Zero issues. I can't comment on durability with a high round count, but as a spare it should be great. I know that there are general concerns about NiB finishes so I'm not sure I'd use it as main. I like nitride finish.

Initially I thought the gas rings felt somehow loose or appeared a tad larger than I'm used to, but the bolt rides nice and tight in the carrier and function was flawless.

If anyone cares, it's a 16", carbine gas, and I tried 223 (55gr), 556 M183 (55gr), and AAC 75gr OTM, all without issues.

So far I have tried Trybe's charging handles, complete BCG's, and now this bolt. Have not seen any real defects. Just sent back a dust cover that had the printing off-center and crooked, that's the only thing. I hope they keep improving so we can have these inexpensive options.
Would recommend: Yes
Was it helpful to you? Yes | No

Good economical bolt and firing pin

by Far Out Man, Verified Owner from GA, United States Written on June 25, 2025
My AR all of a sudden stopped firing, took it apart and suspected the bolt and firing pin. After cleaning it still didn’t fire. Found this and the firing pin as a set. Installed it in my bolt carrier and works great.
Pros:
  • good quality
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Looks great!

by Arn, Verified Owner from AZ, United States Written on April 30, 2025
Received this bolt quickly after placing my order for the 5.56 NATO nickel boron bolt assembly. Since the price was so friendly I bought two, one for myself and another for my son. The bolts came each in a little plastic bag, very plain and unremarkable.
Keep in mind that while I am an experienced shooter, I am no gunsmith or such, and my opinions are those of a layman. My visual examination of the bolt assembly was positive. The nickel boron finish is slick, sure to mean less lubricant is required and may make cleaning easier. I did not see any machining marks anywhere on the bolt, everything looked as it should be. Overall, it looks very well made. I have not yet taken it to the range so I can not comment on performance.
Would recommend: Yes
Was it helpful to you? Yes | No

AR-15 Mil-Spec 5.56 NATO/.223 Rem/.300 Blackout Bolt

by Jack B., Verified Owner from NY, United States Written on March 30, 2025
Great product at a quite reasonable price .... fits perfectly and plan to use it in my .300 Blkout upper.
Would recommend: Yes
Was it helpful to you? Yes | No

mil spec ar15 bolt

by William, Verified Owner from AZ, United States Written on February 27, 2025
I needed a bolt for the parts kit . I switched out the bolt to check it, and it ran fine . Never hurts to have back up parts .
Pros:
  • Price Construction
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Reliable bolt

by bhyatt, Verified Owner from TX, United States Written on January 16, 2025
Needed only the bolt for my 300BO upper. Great price and great quality.
Pros:
  • it works
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Buffer parts

by Robbie 1, Verified Owner from AZ, United States Written on January 14, 2025
Yes this was a great deal for me I didn't want the whole BCG so just bought this part my extractor pin broke I have yet to do a test run but everything fit well.
Pros:
  • good price +rebate
Cons:
  • none yet
Best Used for:
  • ar 15
Would recommend: Yes
Was it helpful to you? Yes | No

ar 15 bolt carrier

by Jairo Serrano, Verified Owner from CA, United States Written on November 20, 2024
The bolt carrier work perfectly good. It doae the job the was intended doing. I have not had any issues with it so far
Would recommend: Yes
Was it helpful to you? Yes | No

Bolt for Bolt carrier group replacement.

by Sam, Verified Owner from TX, United States Written on November 5, 2024
It fit like a dream and operated better then before. Worth every penny .
Would recommend: Yes
Was it helpful to you? Yes | No
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