Polenar Tactical does some full auto MP5 Drills but using the Zenith ZR-5s which are basically MP5-style guns built by a Turkish Company called MKE using MP5 blueprints, Heckler & Koch tooling and imported by Zenith... "Zenith firearms brought us to Virginia where we had the chance to play with some of their 'toys'. :D

Their Z-5 series of roller-delayed blowback firearms are made on HK machines which reflects in high precision and reliability."