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Questions & Answers
What Material is it made out of C158 or 1093 steel

Bolt
9310 Steel
Heat Treated Per Mil-Spec Requirements
Shot Peened Per Mil-Spec Requirements
MPI Tested Material
Nickel Boron Coated
Extractor
Aircraft Quality E4140 Steel
Heat Treated Per Mil-Spec Requirements
Shot Peened Per Mil-Spec Requirements
Nickel Boron Coated

by Gerardo Barriera, Verified Owner, September 16, 2025
Kind of free with MIL-SPEC wording. What is the specification number? Manufacturer Answer

Please reach out to us at Sales@TrybeDefense.com with your question.

by TRYBE, Manufacturer, May 22, 2025
Customer Reviews
Helpful Positive Review
Excellent upgrade by Ray Ray, Verified Owner, February 24, 2024
Finally, I got around to upgrading my nitride bolt and this is a superb value. The quality is excellent and fully mil spec. Dropped right into the carrier with no issues. Runs smoother than nitride and even sounds better.
4/4 found this helpful
Helpful Positive Review
Complete Bolt Assembly by Sandycross, Verified Owner, April 7, 2024
Works great so far. No issues ejecting. Have only run about 20 rounds so far through an Anderson lower and Bear Creek upper.
3/3 found this helpful
Helpful Positive Review
Great tolerances with my Rosco K9... by EG, Verified Owner, March 25, 2024
Bought this as a backup due to the great deal. I headspaced a few of my bolts after installing a Rosco K9 12.5 and this had the tightest headspace. Now, it has moved from a backup to the go to.
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Helpful Positive Review
really good quality by jay, Verified Owner, October 1, 2023
I love the quality shipping was quick and you really can’t beat the price really good brand. Also, OpticsPlanet was very fast get my order ready and everything expected it sooner than the delivery date that was provided.
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Helpful Positive Review
Perfect for any job by PeterPan, Verified Owner, October 3, 2023
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 Aero...
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Helpful Positive Review
working like a beast � by The King Of Ar-15 Builds., Verified Owner, January 20, 2024
Love it fix all my problems with just these piece now my ar shoot an chamber next round the right way work like a beast � was having few problems with loading next round it would get jam but i soon i put these new bolt was runing like a champ�
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Read All 25 Reviews
Color:
Nickel Boron
Caliber:
5.56x45mm NATO
Gun Make:
AR Platform
Gun Model:
AR-15
Condition:
New

Code: TRB-ABA-TP37V-TRDBOLTASNIB

MPN: TRDBOLTASNIB

UPC: 810030586074

$84.99

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made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for TRYBE Defense AR-15 Mil-Spec 5.56 NATO/.223 Rem/.300 Blackout Complete Bolt Assembly

Are you looking for the best Bolt Carrier Group BCG on the market? Your friends at TRYBE Defense have your 6 with all the BCG components you need to build your own, including the TRYBE Defense Bolt Assembly built to Mil-Spec dimensions and coated in nickel boron to last for a lifetime of service. Requiring virtually no lube during use and produced on top-of-the-line Swiss machinery to guarantee exacting tolerances and surface finish, this bolt assembly is ready to drop into your Bolt Carrier Group BCG and hit the ground running.image

For other quality gear to carry and protect everything you'd need for a day at the range, check out the premium field accessories that your loyal friends at TRYBE Tactical and TRYBE Optics have for you. Start customizing today and get ready to JOIN. THE. TRYBE.

Specifications for TRYBE Defense AR-15 Mil-Spec 5.56 NATO/.223 Rem/.300 Blackout Complete Bolt Assembly:

Manufacturer: TRYBE Defense
Color: Nickel Boron
Fabric/Material: 9310 Steel Bolt / Aircraft Quality E4140 Steel Extractor
Caliber: 5.56x45mm NATO
Gun Make: AR Platform
Gun Model: AR-15
Condition: New
Country of Origin: USA

Features of TRYBE Defense AR-15 Mil-Spec 5.56 NATO/.223 Rem/.300 Blackout Complete Bolt Assembly:

Bolt

  • 9310 Steel
  • Heat Treated Per Mil-Spec Requirements
  • Shot Peened Per Mil-Spec Requirements
  • MPI Tested Material
  • Nickel Boron Coated

Extractor

  • Aircraft Quality E4140 Steel
  • Heat Treated Per Mil-Spec Requirements
  • Shot Peened Per Mil-Spec Requirements
  • Nickel Boron Coated

Package Contents:

  • TRYBE Defense AR-15 Mil-Spec 5.56 NATO/.223 Rem/.300 Blackout Complete Bolt Assembly

TRYBE Defense AR-15 Mil-Spec 5.56 NATO/.223 Rem/.300 Blackout Complete Bolt Assembly Orderable Models

List of Orderable Models

  • TRYBE Defense Complete Bolt Assembly, AR-15, Mil-Spec, 5.56 NATO/.223 Rem/.300 Blackout, Nickel Boron Coated, TRDBOLTASNIB , MPN: TRDBOLTASNIB , UPC: 810030586074 , Code: TRB-ABA-TP37V-TRDBOLTASNIB

TRYBE Defense AR-15 Mil-Spec 5.56 NATO/.223 Rem/.300 Blackout Complete Bolt Assembly Unavailable & Discontinued Models

List of Unorderable Models

  • USED, TRYBE Defense Complete Bolt Assembly, AR-15, Mil-Spec, 5.56 NATO/.223 Rem/.300 Blackout, Nickel Boron Coated, TRDBOLTASNIB , MPN: TRDBOLTASNIB-EDEMO , Code: TRB-ABA-TP37V-TRDBOLTASNIB-EDEMO-IN-C
  • USED, TRYBE Defense Complete Bolt Assembly, AR-15, Mil-Spec, 5.56 NATO/.223 Rem/.300 Blackout, Nickel Boron Coated, TRDBOLTASNIB , MPN: TRDBOLTASNIB-EDEMO , Code: TRB-ABA-TP37V-TRDBOLTASNIB-EDEMO-IN-D
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