Fischer inspired Airsoft Suppressor for Glock GBB replica

Have you dreamt to be Robocop since you were a child ?
Your airsoft pistol is too small and you want it to be so big that it reaches to your knee ?
You find holsters for your airsoft pistol too easy ?
Have you ever considered getting a sling for your pistol ?
Are you a fan of useless and uncomfortable attachments on your replicas ?
If your answer to any of the questions above is "YES", then this model is perfect for you.

I designed a mock suppressor inspired by Fischer Development Compact Suppressor , for airsoft/cosplay use.
It attaches to the frame of your Glock 17/18 style replica, locks in place and does nothing else than looking cool and making your pistol unnecessarily oversized.
*As a bonus, the body is hollow, so you can stash a pack of Skittles or a squished Snickers in it, to chew on later *

I printed the model myself and tested it on a WE Tech G18c and an APS ACP601, but it should fit on any Glock 17/ 18 style replica, at least on GBBs.
Does not require a threaded barrel.

Parts needed :
-3d print files included (1 each)
-10pcs- m4x 10mm countersunk head screw
-2pcs- m4x 15mm countersunk head screw
-2pcs- m4x nuts
-1 pen spring

Tools:
-screwdriver/ allen key , depending on your screws (Thank you captain Obvious)
-utility knife/ pliers ( to remove support structures)
-sandpaper/file (depending on your printer accuracy you may need to sand the Locking button to make it slide freely)

Update
Added files adjusted for the use of M4 Threaded Inserts.

-For part orientation see the reference image
-Print with 4 perimeters, as most of the screws will cut their threads in plastic, so make sure the walls are strong enough
-Even though the strength is ensured by the shell I would recommend at least 30% infill
-Use supports for 1_Body and 2_Mount. The other parts can be printed with no supports.