I have a used H&R Handirifle in 223. It was beat up when I bought it. I cut barrell to 18 1/2", recrowned barrell, shortened cracked stock, cammo painted metal, sanded then varnished wood, added a shotgun barrell band for the sling and put on a peep sight. Whole thing weighs under six pounds including a full side saddle bandoleer. My work and about $200, this includes paint, gas for the car, peep sight, 225 walmart (

) rounds and everything else. Short, sweet shooting out to 200yds, carried on a sling I braided from latigo to give extra flex when carrying. After 200 yds, I can't really see anything smaller than a coyote anyhow. Just getting old and weak eyed I guess. 100yds I am happy with a 4" group with this rifle, 200 yds I'm pretty consistent up to coyote, someone else with better eyes should do better.
Best of all I took it apart so I know reliability and no one else has one just like mine.
If you don't need to go past 75 yds an H&R 20 guage is even easier to convert, giving you a firearm lighter still with the versatility of birdshot, buck, and buckhammers for even less money.
Hodr