Top, PWS MK114 5.56 pistol upper receiver, with Gemtech Patrolman 5.56 suppressor. To me, it is a happy accident that the minimum legal length just happens to be my ideal 5.56 barrel length anyway. If you want a barrel length below 16 inches, you must apply for a $200 Tax Stamp and register the weapon with the ATF. In theory, you could have a 2-inch barrel with a 14-inch muzzle brake welded on and still be legal. Provided a muzzle device is permanently attached (commonly called “pinned and welded”), it counts as part of the barrel for length. For the purposes of today’s discussion, that means a rifle barrel must measure 16 inches muzzle to breech face, and the overall length of the rifle must be 26 inches (it is 18 inches of barrel for a shotgun, by the way). The National Firearms Act of 1934 imposed restrictions on short barrel rifles ( SBRs), short barrel shotguns (SBS), silencers, and machine guns. If you are actually interested in short-barreled rifles, seek legal counsel, not a guy that hits things with a hammer for a living. That has nothing to do with the fact that I am too cheap to get a tax stamp, or pin the flash hider on a 14.5-inch gun.įor anyone new to the AR family, here is a short but sweet summary. One thing I do not own though, is a AR in 5.56 with a barrel length less than 16 inches. As long as you can move the bullet fast enough. 5.56 is absolutely fine as a combat cartridge. Many factors go into how a weapon functions and the ballistics of your chosen projectile. You can build a hybrid Hummer or a diesel Prius, but that doesn’t mean you should. Much like a car, you can’t just change things willy nilly and expect predictable results.
I am, however, telling you that the weapons system has limitations. I don’t care what a lost convoy of water purification specialists tells you.
5.56 SUBSONIC SERIES
5.56/.223 has killed plenty of people over the last 40 years, and the AR series of rifles works fine. I am not interested in starting a caliber war (this time at least), and I’m not one of those veterans that is now going to bitch about how my weapon wasn’t good enough. The 300 AAC Blackout (right) might be a great alternative. While the 5.56 (left) has a lot of great capabilities, working well out of a short barrel is not one of them.
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