There's a RTI P2 .25 Compact in the Classified..
www.airgunnation.com
I could be mistaken, but I think the P2s came with the RPB barrels as standard..so it would be 500mm/20". Yes, the 20" barrel does fit in the compact shroud..with about 2" to spare. So you'd need to add a short modrator.
I had a P1 setup in .25 with the LW 600mm barrel that would push FX Hybrids at ~925fps for 49fpe and the 34gr JSB and clones at 885ish for 59fpe. That was with an Huma reg set at 126bar from Huma.
I suspect with P2s improved valve and a 20" RPB barrel you could easily get the 50fpe you're looking for.
PCP Rifle - RTI Prophet Performance 2 Compact .25 cal. Atlas Bipod, scope, rings, Huma moderator more! Excellent condition.
Selling my RTI Prophet 2 Performance compact. .25 cal. Bought it brand new from a dealer back in April of this year (2023), and have put less than a half a tin of JSB pellets through it. It’s an absolutely amazing gun. At under 50 yards, I was getting dime size groups with standard JSB...

I could be mistaken, but I think the P2s came with the RPB barrels as standard..so it would be 500mm/20". Yes, the 20" barrel does fit in the compact shroud..with about 2" to spare. So you'd need to add a short modrator.
I had a P1 setup in .25 with the LW 600mm barrel that would push FX Hybrids at ~925fps for 49fpe and the 34gr JSB and clones at 885ish for 59fpe. That was with an Huma reg set at 126bar from Huma.
I suspect with P2s improved valve and a 20" RPB barrel you could easily get the 50fpe you're looking for.
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