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Cryptic .223/5.56/.300 AAC Blackout Bolt Assembly - Complete
As Low As $56.05 Save Up to $5.50
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cuality practicality

by Rober, Verified Owner from FL, United States Written on August 12, 2025
excellent thread expensively beautiful work performed on
Would recommend: Yes
Was it helpful to you? Yes | No

Ugraded my Mystic Black with this

by Mr Orange, Verified Owner from CO, United States Written on June 19, 2025
I had my Mystic Black Bolt have its gas rings go early. Unfortunately it happens. Luckily I got this on sale because I didn’t want to replace the gas rings and wanted a bolt that was just more aggressive grabbing the cartridge and ejecting it. Now I can’t say if this is better than the original Mystic Black bolt that came with the BCG. It may be a dud. I’ll know soon when I do replace the rings. But this Nickel Boron bolt definitely grabs and ejects them clean and consistent. I feel it’s a better pattern than the OG bolt. I love the dual look. So, I got another to add to my Mystic Bronze BCG. Looks so good with that dual tone. Elite function. I am happy!
Would recommend: Yes
Was it helpful to you? Yes | No

Great replacement Bolt for 5.56 AR

by Seabass, Verified Owner from ID, United States Written on February 6, 2025
My AR was starting to have feeding and extraction issues. And after much testing I came to the conclusion that it was the bolt, I bought this cryptic bolt as a replacement. The price was good so I went ahead and bought it. Dropped into my AR without a hitch and fit perfectly. My feeding and extraction issues were fixed with this Bolt. I put 300 rounds to the rifle with this cryptic bolt in it and zero issues. Would highly recommend.
Pros:
  • Drop in replacement, price, and reliable
Cons:
  • None
Best Used for:
  • 5.56 AR rifle
Would recommend: Yes
Was it helpful to you? Yes | No

Great value!

by Ferret, Verified Owner from IN, United States Written on December 13, 2024
This company is really starting to grow on me. I've bought a few of their products now and so far they've all been really good quality. You'll have a tough time finding this quality at this price point elsewhere.
Would recommend: Yes
Was it helpful to you? Yes | No

Great Quality Bolt.

by Douglas, Verified Owner from TN, United States Written on June 29, 2024
Cryptic is known for their great quality. I paired this with a Geissele RE bolt carrier. Fits perfectly, checked it thoroughly with my micrometer & calipers. Also their firing pin protrusion was within spec. Will definitely be getting more.
Would recommend: Yes
Was it helpful to you? Yes | No

My go to bolt brand

by WhiskeyTango, from VA, United States Written on June 20, 2024
C158 marked, was a pleasant surprise. Excellent fit and finish.
Would recommend: Yes
Was it helpful to you? Yes | No

EASY TO CLEAN

by gunsult, Verified Owner from CA, United States Written on October 30, 2023
THIS CRYPTIC BOLT NEVER LET YOU DOWN!

IT IS REALLY EASY TO CLEAN!
Pros:
  • Easy to clean
  • very smooth
Cons:
  • not at all
Best Used for:
  • HEAVY SHOOTER
Would recommend: Yes
Was it helpful to you? Yes | No
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