The Flat Top upgrades are immensely popular
with Crosman pumper enthusiasts. The idea is that by giving the gun a
larger air reservoir, you can do more work per pump, resulting in the same
shot velocity with FEWER pumps. Or, increase velocity with the same number
of pumps over OEM. They also look a TON better than the poorly-finished
OEM parts Crosman installs from the factory.
The Flat Top Valve is an aluminum OEM
Crosman valve that has been heavily modified.
- First, we put it on the mill and angle
the exhaust so the escaping air doesn't have to make a hard bend.
- After that, we straighten up the
exhaust hole with a nice six-fluted bit.
- Then, most importantly, we flatten the
face to allow more air to be pressurized per pump.
- Finally, we remove as many machining
marks as we can to make a perfectly smooth exterior.
- And, of course, the valve is cleaned
and polished prior to reassembly with BRAND NEW o-rings.
The Flat Top Piston is 7075 aircraft
aluminum milled completely from scratch.
- It replaces both your plastic pump arm
and rubber cup 760-140.
- The polished aluminum matches the
valve and looks substantially nicer than plastic or mismatched brass
Extra o-rings are included, but NO
instructions are included. This mod requires complete disassembly of
your 760, which is no minor chore.
I highly recommend you check out YouTube
for dis/assembly tutorials.
Flat Top Valve Photos
Flat Top Piston Photos
And here's the complete kit, what you'll receive in the mail.