GunCoin network has a bug!
Look at explorer https://chainz.cryptoid.info/gun/# the adress H3tP4g3u3HTCPsLp8Z3Zuj9xkXE36aga8K mined 20 blocks in a minute (3000guncoin) then network lagging about hour or so.

No point to buy or even mine this coin.

Fix it or it looks like scam.