COBRAY TERMINATOR PISTOL

This is the improved version of my older design, Printing is much easier with zero fails this time. (BTW) This thing kicks like a Mule, so be careful .
List of items required:
1 X 10MM X 15MM NEODYMIUM MAGNET (EJECTOR)
1 X 25MM OD, 23MM ID X 280MM L BARREL
1 X M5 X 22MM L BOLT HANDLE
2 X M3 X 35MM L TRIGGER AND SEAR (+ 2 NYLOC NUTS + ELASTICS)
3 X M3 X 10MM L BARREL BUSHING (+ ELASTICS)
1 X M4 X 35MM L GRIP
1 X M3 X 35MM L FIRING PIN (+ 6X WASHERS, KNURLED NUT, 5MM X 12MM L COMPRESSION