760 flat top

[ChiefBoats.ret]

Will a 760 FT piston & valve work in the Crosman M4-177? I have heard that they have the same innards.

[quickster47 †]

Will a 760 FT piston & valve work in the Crosman M4-177? I have heard that they have the same innards.

From all I've read and seen it is basically a drop-in operation.

Carl

[Crosshairs]

I just got another M417 as a gift from my Brother inlaw i will be doing some mod's to this soon. I will let you no how things work out. The 760 valve should fit and so will the 1377s i think. Im going to mod a 760 valve i have and try to make a FT piston, so wish me luck on this one lol.
                                                          Mike

[JEBert]

Good luck with it Mike.  Do let us know how it works out.
Cheers,
Jerry

[quickster47 †]

Several users have already fitted flat top pistons and valves and reported nice gains in FPS.  Somewhere around 100 FPS or close to that.

Carl