Have had ARs and Minis for twenty-plus years and enjoy both. Read lots of mixed reviews about the Kel-Tecs. Thought I'd play around with my own tests. Snowed last week and we had some mud mixed in with the wet snow. Started the test with placing the rifle into a muddy mess. Mudd was a clay-like paste. Pushed the rifle into the mud about four inches and wiggled it around to make certain it got real dirty. After the mud test I hosed the weapon down inside and out making certain the barrel had NO obstructions. I then fired 250 rounds of 62 grain IMI and another 250 64 Power Point from Winchester Ranger. All ten round rapid fire, CA is the pits. No FTE, FTF or any hic-up. I am impressed by this. Very impressed. The weapon does not feel so sturdy because of the stock. If they beefed up the stock this weapon would be a keeper. I will still plink with it but the stock configuration gives me the willies.