Just picked a PTR 91F full size wth 18 inch barrel. The fit and finish was excellent, looks like majority of the parts are old G3 H&K parts date coded from 1964. Quality is that oh any MP5 or HK53 I have ever operated. Out of the box much better than my V53. At the range I put 12 rounds down range using Winchester match grade 165 grain boattail hollow points. On a windy day about 40 degrees I has a three inch grouping at 50 meters the grouping was about four inches to the right but next time I will site it in. Weapon has much more kick than the M16 that I also had out there. Overall I am very pleased, I just got a HK91 for less than half price.