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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\u00d7 Bolt

1\u00d7 Bolt Spring Rail

1x Bolt Latch

1x Trigger

1x Charging Handle

1\u00d7 Barrel

1x Barrel Ring

2x Back Plate

2x Side panel (mirrored)

2\u00d7 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\u00d7 M3\u00d720 Bolt

1\u00d7 Spring for bolt (OD: 10mm, WD:0.8mm, length: 85mm)

1\u00d7 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!

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