Re: AR15/Remington R15
If memory serves me correctly the Remington R15 is basically a rebranded Bushmaster. As far as I know a Bushmaster rifle is a fine predator/varmint extermination tool. They shoot strait enough to kill anything bigger than a baseball(shooter skill depends) so it should serve you well. You might save some money buying a bushmaster that says bushmaster on it though.
.308 Howa 1500, varmint supreme. 24" .820 barrel, Roedale precision brake.
.223 Howa 1500, varmint supreme, 24" .820 barrel.
RRA 20" predator pursuite, Magpul PRS, ALG trigger,