Looking for a decent optic for my AR. Don't have much cash at the moment, so looking to trade my Japanese rifle. My Grandfather brought it back after WWII, and it's rough. Everything appears to be there, including the bayonet. I can send a photo or post pics later. Pretty sure it's an Arisaka, but I admittedly don't know much about these rifles. Looking for a decent red/green dot for my AR... (Vortex, etc).