Stormskata v0.4

General information and Change log – Stormskata v0.3 to v0.4
Updated 2023-05-17

*** Introduction ***
A Modular 3D printable chassis for CZ455 based on a 12mm rod-rail system.
This is still under development and and please contact me for feedback or suggestions.
You are free to make your own modules, and if you allow i will add them in future releases with your accreditation.
The bars have a diameter of 12mm, sitting 28mm apart (center to center) and the barrel is located 23mm above – Center to Center horizontal direction.
AR style grips, such as the MDT oryx chassis grip is what is currently used (also used in the video below) and should fit without problems.
Currently attached grips is not comfortable enough in my opinion, See comments on Grips below under “Pending for next version (v0.5)”
Please respect that this is only for personal use. Not for commercial or resale use, not allowed to print and sell.
Please contact me for details or other questions.
Links:
Discussion thread here (Swedish): https://forum.robsoft.nu/viewtopic.php?f=60&t=301199
Youtube video of Stormskata v0.3: https://youtu.be/hIXt9lczR-g
Youtube video of Bipod: https://youtu.be/O5pIImqtc6s

*** General changes ***

• Modified to use original Stock Screws from CZ455
• Cutouts to change barrel while system is mounted
• Less bulky trigger guard
• New Cheek holder that allows m8 nuts to be the interface with the bolts instead of threaded plastic.
• Asymmetric Cheek-Rest
• Buttstock now fitting Recoil Pads with Cerv001 pattern from Cervellati
• Buttstock attachment point for bagrider M6
• Buttstock Swivel mounts
• Frontstock with M-lok, Swivel mounts, Spartan Javelin Light Interface and hole for threaded m6 pivot mount
• Simplified geometry and many more small general fixes…

New optional Features

• Bipod
• Bagrider
• Magazine holder (22lr)

Hardware

• 12mm bars/Rods/Tubes x2 (Recommended at least 600mm, Solid Steel axle and Carbon Fiber tubes tested. Available here: https://www.mjhobby.se/product.asp?qsLang=&type=2&id=153&pid=KFR-12-10)
• M6 12mm x2 (Recoil pad)
• M6 20mm x2 (Bag rider + Grip)
• M8 minimum 30mm x2 (depending on desired Cheek rest height)
• M6 Countersunk 8mm x1 (Bipod Magnetic interface)
• M5 Countersunk 12mm x1 (Magazine holder)
• M8 Nut x2 (For Cheek height adjustment)
• Cerv001 Recoil Pad x1 (Cervellati MicroCell for example. Avg price approx 20€)

For Bipod

• M3 12mm x1 (Leg fixation)
• M6 24mm x1 (Thumb screw recommended and preferably 18mm unthreaded…)
• Spring x1 (from any push button ink pen)
• Magnet 10×2,5mm x2 (Preferably Neodymium. Available here: https://www.clasohlson.com/se/Neodymmagnet/p/31-1467)
• 12mm bars/Rods/Tubes x2 (Leftover length from Chassis, Adjust length according to your bipod height preference)

*** Printing Recommendations ***

• PLA is a great option but you have to be aware of it’s properties if you live in a very hot climate
• Use at least 2mm wall thickness
• Use tree support only on build plate for clean print of “lower”
• Most models have a printing direction where no or very limited supports are needed. use support blocker as much as possible and set overhang angle to 61*.
• Use support blocker on all 12mm holes for the bars/rods/tubes and use drill to clean up afterwards

*** Mounting Suggestions ***
Recommended Tools

• Plastic Hammer
• Threading tools – M6
• Deburring tool
• Drills (6mm, 8mm, 10mm, 12mm,

When cleaning up the prints beware that tools such as drills and taps generate heat. Do it very slowly and carefully to avoid the plastic from melting and changing shape. A recommendation would be to only do a few CM at a time and let the drill cool in between.

When mounting the system. Torque rear screw first. After that, tighten front screw until barrel is parallel with the bars.
Glue is optional, since it will remove the modularity features…

*** Fixes of v0.4 ***
This section might update without notice to fix errors found in current models

• FrontStock v0.4.1 Fixed M-Lok clearance of nuts
• Magazine ButStack v0.4.1 Better fit for standard 5 shot plastic magazines
• Jaculum Bipod v0.4.1.1 Main housing possible to print without any support for better button functionality
• FrontStock v0.4.2 Easier mounting on the bars, Changed from Screw to Magnet insert (10×2,5mm) for the Front stock.

*** Pending for next version (v0.5) ***

• New Grip – Currently attached is a Modification of a modification made by “Malx” of “Custom Grip for Baikal MP-657 Air Pistol” by “HatCigarNeckbeard” https://www.thingiverse.com/thing:2488628
• Over Barrel Bipod (New front stock already prepared)