SO after about 500 rounds my SBA5 brace had a material malfunction with the plastic position selector pin. sheared right in half. I quickly emailed SB tactical and it took no longer than 30 minutes to get an email back letting me know a new brace was on the way. Problem solved. Then I took my brace apart, saw how simple the part was, made it, printed it, and had a fully functional sba5 in less than an hour for two pennies. If it doesn't fit perfectly just sand it a bit.