Our Benjamin Magazine Models...
The Big Air Benjamin mags were designed for the Benjamin Maurader rifle but also fit in some other Benjamin rifles including the Armada. The mag height works well with medium scope rings. We have both the 22-cal, 12-shot and the 177-cal 15-shot versions. Let us know if you need the 25-cal 10-shot version. We can get it designed fairly quickly.
We designed the Benjamin mags with a snug friction fit on the barrel to hold it in place. We oversized the grippers a bit to prevent a loose fit and to account for the tolerance we've seen between different rifle barrels and breech wells. You'll need to firmly pop the mag into the breech with your palm the first time. This will allow the grippers to conform to the barrel and after a couple insertions the fit will give a nice easy snap in and work great.