What sub-sonic 5.7mm ammo now?

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Hvymax

Blackhawk
Joined
Nov 30, 2022
Messages
934
Location
Maryland
Did the same thing to the 5.56mm M16/M4. Shortened the barrel for CQB but reduced the muzzle velocity nearly to the level of .22 Magnum. Never made any sense to me.
Barrel length studies only show a few hundred fps loss unless you are talking about subsonic ammo because by definition sub sonic is below 1,200fps or so depending on altitude and relative humidity.
The M4 Carbine is way handier and more versatile than the old 20" Rifle for general use. There is the DMR version with an 18" barrel and other upgrades. Personally for subs the bigger the better. I'll take a 500gr sub out of my 450 Bushmaster over a 55gr of rice travelling the same speed.
 

3manfan

Single-Sixer
Joined
Feb 18, 2018
Messages
108
It is if yo
Kinda defeats the purpose. Not to mention the magical ammo isn't available for civilians!!!
It is if you search deep enough for it on the inter-web just make sure that the version you buy isn't prohibited in your area.
 

Hvymax

Blackhawk
Joined
Nov 30, 2022
Messages
934
Location
Maryland
It is if yo

It is if you search deep enough for it on the inter-web just make sure that the version you buy isn't prohibited in your area.
My 357sig hurling Lehigh's will punch anything short of level 4.
 

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