Whoas to woes to wows!! Function check complete and she fires GREAT!! I have to admit that I was spoiled with my STG58 having a gas block showing fire and grenade. My first four rounds were singles while I fiddled with the gas selector😊. Now I know what the line on the L1A1 gas block means. After pulling my head out, set it on 4 and she functioned perfectly. She is a bit of a mag snob, preferring Inch mags to Metric mags. She's a keeper!! Anyone want an STG58 on an Enterprise receiver😁. Cheers, Bruce.