“ When I comes to modern politics, I think the inverse of Hanlon's Razor applies...In other words, "Never attribute to stupidity that which is adequately explained by malice." - Kerplode
I've always wondered myself where the 12.5 ever came from.
The 12.5" allowed a bit more velocity especially with Mk262, even allows for some creative M203 Mounting applications (e.g. DD GL/SSC RIS-II) . For a civilian SBR with a good SS barrel, this has all the accuracy and the majority of the reach needed, and with a compact can on it it's still on par with a 16.1" with muzzle device for length. There are plenty of uses for a 12.5" carbine, and if for whatever reason I could only run one 5.56 weapon system, it would be a 12.5" with a 5" suppressor, A5 RE/buffer, and low powered variable optic.
عندما تصبح الأسلحة محظورة, قد يملكون حظرون عندهم فقط
کله چی سلاح منع شوی دی، یوازي غلوونکۍ یی به درلود
Semper Fi
"Being able to do the basics, on demand, takes practice. " - Sinister
11.5" is the standard length for a short sbr since the 1960s.
10.3" is the length of a MK18 barrel.
11.5" is superior in almost every aspect to 10.3" if using a full spectrum of commercial and military ammo.
10.3" MK18 were specifically developed to give the shortest possible gun tuned to M193, M855, and Mk262 NATO loads.
Last edited by scottryan; 05-25-14 at 00:08.
"Not every thing on Earth requires an aftermarket upgrade." demigod/markm
Yes, but for running short and running loud, the conservative options are:
1) ~11.5" for a healthy dwell time plus muzzle device/ mount of choice
2) <11.5" plus a booster... which is longer than most mounts, heavier, and negates the ability to mount a suppressor
It's clearly advantageous to have the extra barrel vs. a booster.
12.5" is my favorite length... although I admit even indoors I don't "feel" the difference much between 12.5" and 11.5"... and even less between 10.5" and 11.5".
You're just giving up velocity and pushing the limits of adequate dwell time.
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