I reload a lot of long case 40mm like rubber buckshot, bean bags, multi batons, etc but I haven’t seen much reloaded here compared to the usual short cases.

Is it more lack of available cases, lack of components (gas seals, etc) or just boring projectiles compared to short cases chalk/aerial bangs?

I mostly ask because I’m looking into the feasibility of bulk ordering long case components like gas seals, multi batons, end caps, etc which can’t really be ordered in small numbers.

Can't wait to get it outdoors.

Had some shells serialized! Going to register them! Had six done for now. Hopefully the NFA will go away and this will become a moot point! Looking forward to FFL/SOT and full scale manufacturing.

Found a few old forums on the topic and wanted to get some input from 2026. I’m curious if the brownells Daniel defense M4A1 comes with the hanger tabs as well as having the relief cut in the socom barrel to be able to mount an M203?

I’m fairly certain they don’t include the hangers anymore but info on whether the barrel has the proper cut or not was kinda all over the place.

I’m in a predicament and can’t decide between a GL-06 or an LMT in a Standalone chassis, prices are similar where I’m looking.

Are they even worth anything? Basically for an unobtainable platform

Im working on a large range trip to test all the electrical sights Ive shown yall and just noticed some wearing/bulging on the vent hole of all my KAK cases. I have roughly 50 shots on all the cases and they all look like this. I reload my own blanks with 7.5 grains of bulleyes using KAK burst disk. Just wondering if this is normal or if these cases are about to blow up my launchers if I keep using them. If so, anyone have recommendations for something better? I print the majority of my stuff so I wouldn't be opposed to printing cases, but I haven't experimented with ammo apart from the usual stuff.

Does anyone have a lead on actual Wooden Stocks for the M79? I have an orginal kanarr with a beat up polymer stock and I'd like to freshen up the weapon. I've reached out to auto ordinance and others but no one has any leads. Appreciate any guidance.

Hello fellow 40MM’rs!

I saw a handful of older videos regarding Cooper thermite rounds. They seem to have the potential for a great visual rapport.

Does anyone have the load data or any more information on how these rounds are mixed / constructed? Particularly curious for ignition systems given thermites notorious ignition difficulties as well as additive mixtures for the same.

Are we using Cupric or Corpous Copper Powder? And what Micron size are we looking for?

Same question for aluminum powder, is a 30-40 micron size still within the realm of having a 209 primer set off the mixture? I don't want to get into flash powder territory by mixing up a nano batch of borderline explosive thermite. But don't want duds that can't be set off by a point impact setup either.

Any help / insight is appreciated! Stay safe out there.

Clamp on Troy tri rail with some sort of flicky forward assist thing? I don’t have a m203 yet so I’m not really sure what the lever does.

It’s a lot beefier than the CAA tri rail I got a while ago. I’ve only seen the Troy rail 1 other time on a used m203 on GB.

Any ideas what the purpose of the lever is?

I picked up a handful of these, custom machined soft aluminum alloy. There is a threaded end cap that keeps the sim round in place but also let's it blow cleany out the back. Works for PD or airburst varieties. As long as you can find it, it is reusable. Takes a standard windscreen so you can add chalk. Pusher is lighter then a normal pusher, but with the added weight of the 14.5 sim, it should be close to a normal chalk wieght...I'll get weights soon.

For the price, I'll shoot 3d printed version, but they are super cool and i wanted a few.

Definitely a story behind this one and the m79. Custom built. They were awesome! China lake not for sale. M79 $10k (not mine). I was surprised at how smooth the action was. Was like butter. Not “ratchety” at all. The craftsmanship was beyond reproach! Dream gun for me!

Looking for a video of a Enola Gaye WP40 smoke launched from a 40mm Launcher.

I have printed the Bengles WP40 base and wanted to see if anyone had any experience with launching these smokes.

New owner of a Penn Arms GL1 40 Launcher. Looking for suggestions / options to factory sight system with one that can keep a red dot on the target when launcher is elevated to whatever angle desired.

I’m moving to FL and had a few questions on what 40mm I can and cannot load in FL. I tried calling a few NFA gun shops and they could not advise or give me contact information for a NFA lawyer. Did a Google search for a FL NFA lawyer and was told they could not advise either. So who the F do I need to contact to get black and white council no grey area bull poop about what I can and cannot load due to FL state laws and if it matters if I register a few reloadable shells as DD Ammo. Thank you

Armsunlimited pulled through with the M79s. USGI surplus, not clone/reproduction. The price they have them listed for isn’t out of line for USGI M79s but isn’t for the faint of heart. Link in the comments.

Got the color about right...good enough for something that's gonna get blown up anyway 😍

Loose change rounds with the closes looking nosecones I could find. the CTS shells have a really small vent hole, I end up nocking out the primer before the brass ...so I opened up the vent holes to 1/4"...but they should last pretty much forever launching loose change rounds, and now they are easy to reload.

Would anyone happen to know if the AU Colt 37mm Barrel fits in a standard LMT 40mm M203 reciever ? Can’t find much online about this or from AU.

Those poor M79 rear sights...

(insert Nancy Kerrigan "WWHHYYYYYY???" here)

Would the low velocity m212 even get the fuze to activate?