HK 416D (5.56mm)
Spikes M-16 (5.56mm)
M-16, suppressed, Gemtech M496D (5.56x45mm)
Do these take the same ammo? I have found a website that lists as 5.56x45mm and another one that shows 5.56mm and after I ordered both, they show up as the same model number (M193)
Ammo To Go : 200rds - 5.56 PPU M193 55gr. FMJ Ammo In Sealed Battle Pack [PP5.3] - $109.95
20 Rounds of Bulk 5.56x45 Ammo by Prvi Partizan - 55gr FMJ
I am sorry if stupid question, but I don't know much about Rifle calibers. Thank you.