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Posted: 5/17/2010 8:32:15 AM EDT
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Is it possible to have a suppressed ar-15 in .223 that will cycle with subsonics? Now, I know it won't normally cycle because of less pressure. But what if you have a dedicated gun just for this? Can you put in a different buffer? Springs? Or is the issue the actual chambering a round from the mag? Does barrel length make a difference?
I know this has probably been asked before, but I am new to the suppressor world. This would be a gun that ONLY fires subsonics. If there is a way, please let me know. I think this would be awesome. Thanks. |
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I am sure it is possible and has probably been done but I think most people would not waste the money on the parts and tweaking for a dedicated subsonic 223 rifle.
I was thinking about the same thing but a 300 Whisper,300/221 made more sense as it can be shot out to 300 yards and still has some real world usage. A dedicated subsonic 223 rifle would need a faster than normal twist to stabilize bullets at subsonic velocities, have a short gas system (like pistol) and possibly enlarged gas port, the carrier may have to be lightened, the buffer weight and spring would probably need to be modifed, and I am sure a few other mods. Also a shorter barrel would be ideal so something under 16" would be an NFA item and need a $200 tax stamp to register your lower as n SBR. Of course you can put other SBR uppers on the same lower so it's not money out the window. I am not sure of the useful range you can shoot a subsonic 223 but I bet anything further than 50-100 yards is giving up alot in accuracy and energy. |
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Get a .22 or 5.7 upper to cycle .22cal subsonics. 5.7 CAN be loaded with .223 projectiles, and .22 has factory subsonic loads up to 60 or so grains. may not be what you were looking for, but anything you do with SS .223 will most likely make that upper dedicated to SS and way overgassed for standard loads. |
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I would suggest a cheaper and yet almost the same ballistics from a .22 AR loaded and tweak for Aguila SSS loads, 60 grain subs. Cheaper (less custom work) and if you choose you would probably be able to use normal .22 when needed (stabilization issues will likely arise).
I would look into that first. Ammo would be cheaper, possibly more reliable, and look identical to this sub .223 you wish to build while maintaining roughly the same ballistics. Hope this helps. IMHO, Slim |
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One of the ammo companies called Extreme Shock markets a subsonic round for the AR's. They claim that it will cycle the gun. Has anybody tried the stuff to see if it does work as advertised.
Extreme Shock Ammo |
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Quoted: One of the ammo companies called Extreme Shock markets a subsonic round for the AR's. They claim that it will cycle the gun. Has anybody tried the stuff to see if it does work as advertised. Extreme Shock Ammo Extreme shock is a joke. |
I talked to a Class III dealer today thats an acquaintance of mine and he told me that he ordered a pallet of EBR Subsonic thats guaranteed to cycle in an AR. Its marked LE/Military only though. I want some! The subsonic EBR that I have that isnt made to cycle sounds just like a .22lr rifle.
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All the killing power from the 5.56 round comes from its 3000FPS.
Reduce velocity by 2/3 and you reduce energy by 89%. The only reasonable explanation I've heard for subsonic .223 is for truly professional use (like lights) before manually cycling a full power round in for the party in the dark. |
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