There is a video on another forum from the Wolfman store which suggests that the DonnyFL FX is vastly superior to the other things tested…except that Wolfman store didn’t actually measure anything themselves and admit they went by the respective manufacturers numbers. So how are we to know the methods used were vaguely comparable? It seemed a rather pointless video to me.

Anyway, enough of that. Real world I’ve tried my friends .177 DRS with a DonnyFL FX on it, whereas I have a Weihrauch XL on mine (both unfiddled 12 ft/lbs uk spec). We agreed at the time that the HW seemed quieter, but not a huge amount in it. In that scenario the Donny fits the lines of the DRS slightly better, but only marginally. Otherwise the HW (which is a fraction fatter) looks decent on the other guns I tried it on.

I’m not bashing the DonnyFL, but I don’t think it’s the best thing since sliced bread by any means. It’s not bad though, just not amazing really. I guess ideally try as many different ones as you can on your particular gun before deciding.