BB-MPK Functional Prop/Launcher

The BB-MPK is a functional prop/launcher and the unofficial (PLAS)TEC-9 V2. It is not a very powerful launcher, but still some good fun! Tolerances are quite tight in some places so sanding/filing may be required, but for best performance sand down the bullets and the barrel to reduce friction

Check out @katfish for some super sweet remixes that make it look way better!

A cool modular remix of the upper with a foregrip, drop in sights and rails: https://www.printables.com/model/770121-little-brew-boy-mpk-upper-reciever-remix

My Settings:

Printer - Bambu P1P

Filament - eSun PLA+ (Black, Red & Silver)

Walls/Top/Bottom: 4

Infill: 15%+

Supports: Required for larger frame parts.

Printed Parts:

1x Lower Frame

1x Upper Frame

1× Bolt

1× Bolt Spring Rail

1x Bolt Latch

1x Trigger

1x Charging Handle 

1× Barrel

1x Barrel Ring

2x Back Plate

2x Side panel (mirrored)

2× Grip Panel (mirrored)

1x Magazine Catch

1x Magazine

1x Lift Table

1x Magazine Spring Guide (Base)

1x Magazine Spring Guide (Joint)

1x Magazine Baseplate

10x Bullet

Additional Hardware:

6x M3*5 Bolt 

2x M3*7 Bolt

4x M3*25 Bolt

1× M3×20 Bolt

1× Spring for bolt (OD: 10mm, WD:0.8mm, length: 85mm)

1× Spring for Magazine (OD:10mm, WD: 0.6mm, Length: 150mm)

2x Pen Spring (1 for Magazine catch, 1 for Bolt latch)

**Bolt and Magazine Spring were purchased off of AliExpress, I purchased a 305mm one of each wire diameter and then cut it to length.

Tools:

Needle nose pliers.(for pesky pen springs)

Super glue. (To secure side panels)

Hot Glue (to secure barrel)

Enjoy and good luck! I will attempt a build guide in the near future but if you've built the Plastec-9 or the BB-420 Carbine it should be a piece of cake!