Not much,
I built 5-10 LK-93s up for a shooting program I assist with. Light and compact - can “sporty” with heavy bullets, but mine were 2-3 inches at 100 with 300 grain bullets and two 777 pellets.
Possible downside - they’re a plunger rifle, so whom ever is shooting needs to be able to pull the plunger back to cock it. Can be a problem for young shooters.
Check the hammer - it should a flat but slightly pointed dome with a distinct point on it. This is newer style hammer for 209 primers - the flat face is for percussion caps.
Breech plug should have the one piece nipple stem for the Red Plastic Jacket primers - not a traditional replaceable cap nipple.
If you find these are percussion fired - no problem using them “as is”, but add $60-$80 for a 209 conversion kit.
Last edited by AH64guy; 01/17/23.