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The current M855 round used by the military is slated to be replaced by a new lead free M855 LFS round. The ATK/Lake City developed projectile uses a bismuth-tin core and will feature reduced flash, increased velocity, and better aerodynamics. The new M855 LFS projectile does not use a FMJ construction. Unlike current M855, the dark grey steel penetrator of the new M855 LFS extends THROUGH the jacket nose

 

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Maybe this is why there is a shortage of 5.56 ammo, they are slowing down production of M855 so they can gear up to make this.
 

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Does this mean the Air Force will finally stop using AA40 from Federal? The last entity in DoD to still be using it. Oh happy days. :D
 

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Yuck, the black tip doesn't look evenly bonded to the copper jacket behind it. I wonder if thet helps or hinders drag.

It's mentioned in SOCNET and the ARMY times.

Mind you the idea of a flash suppresent is nice, I could switch to a pure muzzlebreak to get more control.

Here is an interesting presentation on Military direct fire munistions form May 2008, http://www.dtic.mil/ndia/2008Intl/Grassano.pdf
 
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