WHAT IN BLUE BLAZES ARE YOU WAITING FOR??!!??
Ammo is cheaper than it ever has been, so are magazines. So are replacement parts. So are upgrades.
Don’t get me wrong; I love my Yugo M48 and my other rifles, but if I gotta defend hearth and home, I’d really rather have an AR with about 4,000 rounds of barrier blind ammo and about 20 mags…..along with another couple thousand practice rounds and some range time.
Get thee hence and upgrade your ‘survival’ armory.