PR built many 3-12's, 4-16's, and 5-25's in house, Germany would send parts and PR would build them. Mostly they got Gen 2 or Gen 2 XR reticles (4-16 and 5-25 only) but PR installed Horus reticles too. Horus would send several reticles but they were generally shit quality so you got what you got. There are pics of USMC Recon using some 4-16's with Horus reticles and an Army SMU used them, another government agency put in an order but I believe they switched at the last minute and got 5-25's. The crux of the 4-16 is its lack of elevation adjustment but otherwise it was an excellent scope.