Poor quality control - F5 MFG Ruger 57 5.7x28mm +5 Rounds Magazine Extention

I expected more from a company within the USA and thrives on making parts for us very few 2A lovers. This product had missing parts. The follower was missing in both packages, and hardware was missing in one. I got one of the extensions on a mag but the second one won’t even screw the lock properly because the hole was not pilot deep enough. On the one mag I got it on, don’t believe the photo because this is no where NEAR flush! Pathetic ! I was given a partial credit for a now useless product. I tried to contact F5 but their phones hang up every time you try and connect to their service. Sent an email and I’m waiting! This is not what I expected from a product made in America !