My son came into one of their uppers in .458 SOCOM. That my grandsons have not been able to wear it out yet has not been from lack of trying. Would I want it as a serious defense arm? No, but that’s not what he’s got it for. He’s got it for the kids to blast stuff in the backyard: steel plates, tin cans, tannerite bombs, etc. I think that’s a real legitimate use for a cheap upper. When the stuff breaks they learn to fix it. He got the youngest kid a PSA kit for a few hundred bucks last year and the boy learned how to put an AR together in a few nights after school. For that purpose it would make no sense to me to take the time and spend the money for all the latest highly regarded components to build a super AR. Let kids be kids.
Cra,
Keep a close eye on the bolt around 500 rounds. BCA's rather infamous for improper heat treatment, so check the dimensions of your pivot pin hole and make sure signs of egging and stretching.
