These are digital files for a Kronos pusher breech kit which turns a stock Kronos into a high power blaster capable of firing half length darts from magazines.
Features:
- Option of using 17/32 brass or aluminium barrels
- Performance is over 200fps with a 14kg Kronos spring or K25 spring
- Includes a “skinny” breech to allow swapping magazines with the breech closed
- Includes a 12mm ID high airflow breech for higher performance (up to 300fps)
- Magwell is sized to gravity-drop magazines with a low profile magazine release
- Magwell is set slightly lower than normal for more reliable dart feeding
- Includes a cutting guide to make cutting the magwell slot very easy
- 2 different t-pulls to fit either the standard Kronos or Amazon Kronos re-release
- A picatinny top rail which replaces the loading door
- A part to remove the safety switch
- An o-ring expander to achieve a 100% air seal
Additional materials required:
- 14/18kg Kronos spring or a 9kg Longshot spring or a K25/K26 spring
- (brass version) 22-27cm length of 17/32 inch K&S brand brass depending on spring used
- (brass version) 10.5mm length of 1/2 inch K&S brand brass or a 73mm length if using the high airflow pusher
- (aluminium version) 25-30cm length of 13mm ID, 16mm OD aluminium barrel depending on spring used
- (aluminium version) 10mm OD, 6mm ID, 2mm cross section pusher o-ring
- Tighter or looser aluminium barrels will work with different pusher o-rings
- Optional: replacement o-ring (see below)
NOTE: Kit will only work with non-angled talon style magazines. Magazines using the katana geometry will not fit.
The kit includes an o-ring expander to improve the seal drastically, but this leads to the o-ring getting compressed over time. Instead I would recommend using a 36mm OD, 29.8mm ID, and 3.1mm cross section o-ring which will get a much better seal and boost performance, or you can use the stock o-ring without the o-ring expander too.
Purchase includes 19 .stl files (plus extras) and a detailed guide to install the kit.
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