It would handle subsonic quite well because the recoil impulse would be so low, but as soon as you started running any normal ammo through it, the bcg would fail very quickly due to wear. The problem with aluminum is its strength. Aluminum is the lightest material that anyone makes bcgs out of and the price is (surprisingly) reasonable at $ 160. You would need an aluminum BCG and an adjustable gas block. when i said earlier that you could build an ar to shoot subsonic 223, you can.
#Subsonic 223 decibels crack
adding a suppressor will quiet the sound of the gun itself going off, but not the supersonic crack of the bullet.Į3. It would still be traveling at ~2x the speed of sound when it comes out of the barrel though, so your gonna hear it no matter what. Yes, the 77gr bullet would offer a marginal amount of improved sound suppression due solely to the fact that its a little bit heavier and thus slower. realized i didn't directly answer your question. Suppressors also act as perfect flash hiders.Į2. You cant get rid of the guns ability to be heard, but you can reduce the distance with which its heard. The Welrod is arguably the quietest gun ever produced and its still at 73db when fired Its nearly impossible to Silence a gunshot, though we've come pretty close. Here's some "truth's" that ive discovered when researching suppressors. This will help with the "pop" but wont do anything for the "crack"Į. That being said, you can still suppress 223/556. Bigger bullet, bigger powder charge, more pressure. This is one of the reasons people really like using 300blk (223brass resized to take 308 bullets). I mean, you could spend a bunch of cash to make one that works, but it wouldnt work very well with standard bullets either. Subsonic 223 doesn't put out enough gas to reliably cycle a standard ar15. So, to lessen the noise, you have 2 options (which aren't mutually exclusive) suppressor and/or slower bullets.
#Subsonic 223 decibels series
A suppressors job is to capture those expanding gasses and slow them down by forcing them through a series of baffles and converting that energy to heat. The second sound you hear is the "pop" of the powder charge burning off. no breaking of the sound barrier, no supersonic crack This is the whole point of subsonic ammo. The first is "crack" of the bullet breaking the sound barrier. The sound you hear when a gun goes off (report) is actually 2 different sounds happening at the same time. This is a simple question with a potentially complicated answer, so ill try and keep it as simple as possible.
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