300 AAC Blackout

152 topics in this forum

1. 300 BLK MINIMUM gas port sizes...

   By 98Z5V, January 4, 2017
   • 24 replies
   • 37.2k views
   • 
   • 98Z5V
   • August 9, 2025

2. Offical 300 BLK Picture Thread 1 2 3 4 12

   By 6132expert, August 12, 2011
   • 284 replies
   • 132k views
   • 
   • Belt Fed
   • November 29, 2024

3. 98's 300 Blackout wisdom.

   By Sisco, July 12, 2017
   • 10 replies
   • 8.7k views
   • 
   • ApexJunky
   • March 8, 2023

4. 300 AAC Blackout Operations, Maintenance and Troubleshooting Manual

   By 98Z5V, April 28, 2011
   • 4 replies
   • 9.4k views
   • 
   • Hotwrench
   • February 18, 2018

5. Baffling new barrel issue

   By 308USK, April 12, 2025
   • 19 replies
   • 4.1k views
   • 
   • 308USK
   • May 19, 2025

6. This might be my new favorite gun

   By shepp, August 16, 2024
   • 20 replies
   • 2.9k views
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   • Sisco
   • November 18, 2024

7. OK, so I broke down and bought some comm' subsonic ammo as a test of my build

   By BrianK, March 18, 2023
   • 0 replies
   • 1.2k views
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   • BrianK
   • March 18, 2023

8. My AAC 12.5” PDW project

   By ApexJunky, May 27, 2022
   • 12 replies
   • 2.8k views
   • 
   • shooterrex
   • March 8, 2023

9. 300 BLK Info Vid - very good info.

   By 98Z5V, February 21, 2023
   • 11 replies
   • 3.5k views
   • 
   • BrianK
   • February 28, 2023

10. Gettin' antsy for spring and warmer weather.... load experimentation 1 2

    By BrianK, January 25, 2023
    • 27 replies
    • 4k views
    • 
    • BrianK
    • January 27, 2023

11. Expecting a baby........300 BLK 1 2 3

    By dpete, March 20, 2022
    • 50 replies
    • 7.9k views
    • 
    • JMJ
    • August 27, 2022

12. what spring and buffer do you want for a 300blackout pistol

    By Magwa, October 15, 2014
    • 12 replies
    • 8.1k views
    • 
    • BrianK
    • July 18, 2022

13. Wish I had $2400!

    By BrianK, July 6, 2022
    • 9 replies
    • 2.5k views
    • 
    • BrianK
    • July 8, 2022

14. loading cast NOE 225s

    By BrianK, June 13, 2022
    • 8 replies
    • 2.3k views
    • 
    • bubbas4570
    • June 20, 2022

15. Looking for Trail Boss powder

    By BrianK, April 27, 2022
    • 6 replies
    • 1.8k views
    • 
    • Thecustodian
    • May 9, 2022

16. Load data, Maker 85gr TREX and WW296

    By BrianK, May 13, 2021
    • 11 replies
    • 5.4k views
    • 
    • BrianK
    • May 4, 2022

17. Not a 300BLK, I hope this is OK.

    By BrianK, April 12, 2022
    • 7 replies
    • 2k views
    • 
    • BrianK
    • April 18, 2022

18. SCORE!! Bunny Fart Powder

    By dpete, February 16, 2021
    • 12 replies
    • 5k views
    • 
    • BrianK
    • April 17, 2022

19. Added another part

    By BrianK, February 27, 2022
    • 8 replies
    • 1.9k views
    • 
    • BrianK
    • March 14, 2022

20. Alternate sighting for a 300BLK AR handgun

    By BrianK, July 31, 2021
    • 5 replies
    • 2.6k views
    • 
    • Magwa
    • December 2, 2021

21. Lane's: jtallen83 inspired 21.750" 300 AAC Blackouts 1 2 3 4 9

    By Lane, February 28, 2019
    • 202 replies
    • 45k views
    • 
    • Lane
    • July 11, 2021

22. 110 gr Varmageddon at SPS

    By dpete, June 18, 2021
    • 0 replies
    • 1.6k views
    • 
    • dpete
    • June 18, 2021

23. 300BLK article in Firearms News

    By BrianK, May 21, 2021
    • 2 replies
    • 2.1k views
    • 
    • BrianK
    • May 30, 2021

24. Lets See your 300 blackout pistols 1 2 3 4 6

    By washguy, February 11, 2019
    • 133 replies
    • 30.4k views
    • 
    • BrianK
    • May 12, 2021

25. RARR 300 BLK update

    By dpete, April 24, 2021
    • 3 replies
    • 2.6k views
    • 
    • shooterrex
    • April 24, 2021