If I recall correctly, I got to see a .32 NAA version of the Diamondback pistol at the 2011 Media Day at the Range. Diamondback published this video of a barrel conversion for the DB380.
If you aren’t familiar with the .32 NAA, it is a bottle neck pistol cartridge that uses a necked-down .380 ACP case. Generally, the .32 NAA cartridges will use the same .380 magazines, so a simple barrel change is all one needs to run the new ammo in the gun. It works a lot like the .357 SIG/.40 S&W barrel swaps.
It seems that more and more people are making ammunition, guns and uppers for the 300 BLK (aka 300 BLACKOUT) cartridge. The latest that I have found (via the 
Buffalo Bore rolled out a new 
The new Hornady Heavy Magnum turkey shotshells are the latest move by the company to expand its offerings for shotgun shooters. (Another recently released shotshell was the Z-Max for zombies…but that is a whole different bird.)
Hornady announced a 17 Hornet load for varmint shooters. The Hornady load pushes a 20 grain VMAX bullet to 3650 fps. According to Hornady, this load mimics the trajectory of their 55 grain .223 Remington load, but at a lower cost and with recoil akin to the .22 WMR.
Hornady is rolling out a new line of ammunition designed for police work. The Critical Duty line of ammunition is a new series using the company’s Flex Tip technology found in the Critical Defense line of ammo. The Flex Tip combined with a integral bullet band called the InterLock make a new bullet design called the FlexLock bullet.
There is a good reminder on why you should inspect your ammunition at BlueSheepdog today. Aaron talks about