At the beginning of 2021 two of the folk I shoot USPSA with decided to try Kel-Tec 2000's in the carbine class. Neither carbine ran well enough to complete a match. One of the guys sent his off to Kel-tec and told me they could find nothing wrong The other used a gunsmith in Rapid City to work on his. Neither are shooting Kel-tec's this year. One went back to his Shadow 2, the other bought a CZ Scorpion that runs like a champ. I have a PLR-16 in 5.56 and have had no problems with function or feeding.