r/37mm
Airsoft M203 to DIY 37mm M203
Hello, this is a project that converts an airsoft M203 into a fully functional 37mm replicating the real M203 mechanisms. The original purpose of this project was to make a DIY M203, as well as “reverse engineer” M203 parts to something that could be made from a SCS service or printed by anyone. This has been in the works since ~2020 but stayed in an stalled state for many years. I am releasing this in hopes that this helps other M203 enthusiasts. If enough interest is shown, I might continue the project.
As the project is not complete, there will be some information gaps the builder has to fill. Check out the whole guide and decide if it’s something you’d like to before purchasing anything....
Text above is a copy pasta of the intro, but I wanted to share my project in case anyone else is interested. Note, it is incomplete, but every step I made is explained.
Files are sailing the seas.
u/ErraticHail2012 — 24 hours ago
▲ 22 r/37mm
Geneva Breacher Build Completed!
Just in time for our celebration of 250 years of Freedom!
Finally got the Geneva Breacher built as I’ve been sitting on the parts for a while, getting pulled in other directions.
Build process was pretty simple and went pretty smoothly. Ender springs were definitely a bit too powerful but some use should get them broken in.
Along with this build is a site update. SBS has finally been approved by a payment processor and should be able to take payments directly very shortly! Will have a post on r/gundeals for a launch sale once it’s working!
u/SpeedBoiSystems — 1 day ago
▲ 38 r/37mm
Threaded Rifled fused MILC
Has anyone dabbled with the threaded, rifled and fused projectiles by PrintGunner?? Been using MILC 1.0 for quite some time now with my Odin.
Came across the projectile listed above. But how does one get stars or a break to put into said projectile?
(Pic with my Odin)
u/ExtrudedPews — 6 days ago
▲ 1 r/37mm
How to register Tac-79 as a DD
Hello everyone I own a tac 79 launcher and am wondering how to register it as a DD and if I need to engrave a serial number on it although it already has one from factory any help I’d appreciate. I’ve bought a suppressor from silencer shop and if at all possible I’d like to register it through them thanks.
u/Limp-Rub1535 — 6 days ago
▲ 5 r/37mm
Easiest to build 3D printed 37mm?
Hey guys. New here, but I’ve been looking into printing some 37mm launchers for a while.
For a long time I was looking at the tng, but now I’m looking at the nameless and the Odin, but I’m open to other suggestions.
Here’s what I’m looking for.
First and foremost, ease of build and easy to find parts. I know the nameless needs an AK recoil spring, but I can handle that. I want something where what I can’t buy at the hardware store can be gotten on Amazon. I would just buy a kit, but it seems like they sell out quickly when they come in stock.
Second, single shot. Eventually I’d like to do a multi shot model, but I figure a single shot would be better for a noob.
Lastly, and least important. It would be cool if I had the option to mount it under barrel for range day funzies. This one isn’t a deal breaker though.
u/HairyBiker60 — 7 days ago
▲ 45 r/37mm
New stuff coming for 37mm owners. MILC compatibility is about to be pushed to its limits.
Sneak peek of some of the things I have been working on behind the scenes. My second run of MILC 2.0 compatible shells will be sent out in the next 60 days. The new shells will be standardized dimensionally with benglesbullets MILC shells ID and OD. I will adjust my projectile line to match the proper dimensions and I will have them released on my Odysee page soon. I have made a 3d printed solution for use with my inserts which will be arriving soon as well for smokeless blank use. The inserts will be available from myself and possibly benglesbullets as well for DIY home printing gurus to spin up whatever they can dream of. I will also be putting up a newly designed MILC 2.0 compatible base and Insert compatible base for use with the 1.5” 17 gauge brass tubing based rounds. This should allow you to construct smokeless powered shells for about $9 ea in material costs. Will also be doing more video and distance and accuracy testing soon - once my hay is cut and bailed in my field. If you haven’t already please follow my YouTube channel to catch all the new testing and eval. Thanks !!
u/37MMDTdotCOM — 9 days ago
I just recreated the 40mm folding drone.
I designed my own 40mm drone using 4S 14500 batteries, 1404 motors, and a GOKU GN405 stack. Do you think this project could complete a basic hovering test?
u/3dplus_creations — 13 days ago
▲ 3 r/37mm
Why 40mm?
I’ve been digging into launchers for a while now before I jump in and buy one. With MILC cases for 37mm and 3d printed projectiles, it doesn’t seem like there’s that much performance difference for the sake of signaling/bangers between 37 and 40mm. And of course I’d rather not deal with the ATF at all if I can avoid it.
For those that have used the longer range smokeless options for 37mm and also ran 40mm, do you think 40mm is worth stepping in DD territory?
u/coltron17 — 10 days ago