Indyjones65
Plinker
- Dec 29, 2011
- 55
- 6
I am new to the AR15 and I am confused on proper ammo selection. I recently purchased a S&W M&P 15. The caliber is marked as 5.56 and I'm getting conflicting information as to being able to use .223 ammo, yes you can, no you can't. I was hoping some of you could direct me to a place to find some answers, and let me know your opinions and experience with this. Sorry if this is a question that has been answered before.