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576 Posts
Nice work it's good to get some verified info on the platform and work out a good upgrade path as a lot of beginners pick up this rifle as it's cheap and iconic.
Possibly you might be able to use an Aps2 piston and 90' second sear?
Wonder if it's possible to drill new screw/mounting holes in a vsr trigger housing to fit the rifle. As they look very similar.
Also 44cm3 as the volume has to be wrong that's tac41/SRS levels of volume most aps2 stuff is around 30cm3 did you calculate it using the entire cylinder length or just where the piston head would sit from when cocked and the cylinder head?
Possibly you might be able to use an Aps2 piston and 90' second sear?
Wonder if it's possible to drill new screw/mounting holes in a vsr trigger housing to fit the rifle. As they look very similar.
Also 44cm3 as the volume has to be wrong that's tac41/SRS levels of volume most aps2 stuff is around 30cm3 did you calculate it using the entire cylinder length or just where the piston head would sit from when cocked and the cylinder head?