AR Pistol 9" barrel Recommendations

[wsr]

dropping down to 9" because i have a Law Tactical Folder on it to keep it in my backpack in my truck and am over 26". Yes i can take the folder off and i am under 26, but then it doesnt fit in my pack. Its a give and take situation.

You’re well under 26” when folded...

[Scoop]

Wrong.

I read quite a few articles at quite a few different places, and the general consensus seemed to be that ~9" was the optimal barrel length for the .300 Blackout, and that anything long really didn't provide additional benefit:

Nick Leghorn over @ thetruthaboutguns.com stated that he had numerous conversations with the folks at AAC, and said that that was their response. From his article:

There is, however, a point of diminishing returns. Once all of the powder in the case has been burned, there’s no more fuel to add to the combustion and the gasses are at their maximum energy. Adding more barrel length after that point might still increase the velocity a bit, but the added weight isn’t always worth the extra dollop of velocity."

For 5.56 NATO, that point is 20″ of barrel. For 300 AAC Blackout, that point is 9 inches of barrel. That number comes from multiple conversations with the people who designed the 300 AAC Blackout cartridge, did the initial testing, and who continue to design guns around that caliber."

https://www.thetruthaboutguns.com/20...lackout-rifle/

[thedonn007]

I read quite a few articles at quite a few different places, and the general consensus seemed to be that ~9" was the optimal barrel length for the .300 Blackout, and that anything long really didn't provide additional benefit:

Nick Leghorn over @ thetruthaboutguns.com stated that he had numerous conversations with the folks at AAC, and said that that was their response. From his article:


https://www.thetruthaboutguns.com/20...lackout-rifle/

I think you are looking at subsonic, and Wizz is looking at supersonic.

[Scoop]

I think you are looking at subsonic, and Wizz is looking at supersonic.

Yes, I was.

Sorry if I wasn't clear, Wizz.