While certainly not technical feedback, this is the wrong time to be spending $$$ on an AR pistol. To be truthful not even 16" AR's are likely to be safe, but "pistols" are low-hanging fruit and easily picked. YMMV.
To render more technically-related info? As others have said, going below 10.5" is not desirable or optimal, both for ballistics and function.
11C2P '83-'87
Airborne Infantry
F**k China!
I would posit they're ALL in some danger at this point.
Biden has said he'll make all semi-automatic rifles Class III weapons.While certainly not technical feedback, this is the wrong time to be spending $$$ on an AR pistol. To be truthful not even 16" AR's are likely to be safe, but "pistols" are low-hanging fruit and easily picked.
HE doesn't understand what he's talking about, but his handlers do...
"I am a Soldier. I fight where I'm told and I win where I fight." GEN George S. Patton, Jr.
^^Agreed^^
Your experience is different than mine. Neither your experience or mine proves or disproves anything. I cannot tell a real difference between a 16" or 14.5" AR, but my 11.3" has noticeably more concussion.
This article also disagrees with you: http://www.sadefensejournal.com/wp/b...-nato-weapons/
If you have quantifiable proof that the sound level or muzzle pressure is the same with a 10.3" and 16" 5.56, feel free to share the data.
I could also point out the OP and my post are referencing 7.5" barrels.
Andy
Last edited by AndyLate; 01-14-21 at 18:36.
Actually it says...
"Actual sound pressure levels varied from 162.5 dB(A) in the 24-inch barrel to 165.1 dB(A) in the 5-inch barrel." Almost reads like a misprint as I'd have guessed a much greater difference from a 24" to a 5"! 16" to 10" I seriously can not tell the 10" is much louder
Plus the article is dealing with effects on suppressors....Maybe it correlates to unsuppressed.....
Anyways....As I said it's not a very discernible difference and no reason to avoid a shorter barrel. Other factors would be more important IMO.
Cool article! Thanks!
I'm not questioning whether you notice a difference. A 10.3" barrel using the same muzzle device and ammunition as a 16" barrel will be measurably louder. I, like most people on the planet, can detect a difference as well.
FYI - there is a significant difference between 162.5 and 165.1dB, certainly detectable by most people. 2.5 dB is roughly a 25% increase in perceived loudness. Also from the article "the sound measurements are not considered overly accurate due to compliance with the Mil-Std."
To be clear, the quote I found amusing and provided was, like the OP, referencing a 7.5" 5.56 barrel.
Andy
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