due to eyes getting tired,[aka old] have a hard time seeing regular iron sights. i put a williams fp receiver sight hoping that would help. but can't seem to get accurate with it. trying to keep rifle as slimm as possible and to have as a knock around rifle something to put under back seat in pickup and forget about it until it is needed . don't really want a scope but may have to that route. trying to stay small and light as possible.thinking scope would take away from that . have a red dot laying in parts drawer off a mini 14 could use that but now have to worry about batteries being ready when i need it. any suggestions some type of small low power scope or something