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Q&A for Daniel Defense AR Bolt Assembly 5.56 NATO / 300 Blackout — 1 Questions & 2 Answers

Name Daniel Defense AR Bolt Assembly 5.56 NATO / 300 Blackout (4.4)
$95.00 $87.00 Save $8.00
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Q
Steel Shrapnel, member, from NC, United States, asked on January 10, 2024

Looking for 300 Blackout only bolt only, they all advertise 223/5.55 and 300 BO! Once I click on options none of them distinguish between calibers

A
Answered by Thomas J, member, from MI, United States, on January 08, 2025

A bolt made for 300 BO is identical to a bolt made for .223/5.56. The dimensions are exactly the same and they are 100% interchangeable, as a 300 BO is just a "necked up" .223/5.56. The magazines are interchangeable between the two calibers as well.

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Last updated 2025-11-12 UTC.