Image 1 — New 40mm double shell caddy
Image 2 — New 40mm double shell caddy
Image 3 — New 40mm double shell caddy
Image 4 — New 40mm double shell caddy
Image 5 — New 40mm double shell caddy
Image 6 — New 40mm double shell caddy
Image 7 — New 40mm double shell caddy
▲ 27 r/40_mm

New 40mm double shell caddy

I found this on IG and ended up buying one. The shell retention is pretty innovative, using little ball bearing detents that lock into the case rim. For a printed part it’s very well made, metal thread inserts in all the places that have bolts in them, pretty sturdy, no obvious seams.

The retention seems a lot more consistent across multiple cases (aluminum/nylon/short/long) and different manufacturer compared to traditional kydex friction fit ones like what Hurricane Butterfly makes.

Only gripes so far are it can get a little crowded on the barrel with long casings and a vertical grip but there’s not much to be done about that regardless of design. There’s also a pic rail mounted model.

u/Ok-Calendar9243 — 13 days ago
▲ 61 r/40_mm

Small run of Kevlar bean bags

0.5mm silica beads finally arrived from aliexpress, so for all these tied up. Small rubber ballon full of the beads in a double layer Kevlar sleeve. 60g total, they fly great, reusable and haven’t had one burst yet.

The silica beads all being round, uniform size and and the same size as sand makes them feel much more squishy, like a gel more than sand which I’ve tried before. Fine sand would work well too.

u/Ok-Calendar9243 — 1 month ago
▲ 88 r/Vz61

Finally done…. For now

Chopped the barrel, .32 3-lug (oal about matches the factory barrel), and side fold adapter with a VZ58 stock.

u/Ok-Calendar9243 — 1 month ago
▲ 32 r/Vz61

Super short 3 lugged barrel

Picking this up from my gunsmith tomorrow. Pretty hyped to get a can on it. I missed the drop of the wide wire suppressor stocks but I’ll get one next time.

u/Ok-Calendar9243 — 1 month ago
▲ 9 r/40_mm

Who reloads long case 40mm?

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.

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u/Ok-Calendar9243 — 2 months ago
▲ 21 r/40_mm

Another weird m203 accessory for the collection

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?

u/Ok-Calendar9243 — 2 months ago
▲ 67 r/40_mm

Original USGI M79s in stock

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.

u/Ok-Calendar9243 — 2 months ago
▲ 2 r/MP5

KAC RAS not fitting

This is a HK53 clone (not made by MKE), the RAS fits fine on my AP5. The cocking tube in my HK53 clone sits low in the front sight block ring, it bumps into the bottom of the ring before aligning with the handguard pin holes. It seems like it may be an issue with the hanger as the tabs on the RAS around the pin hole bumps into the tabs in the hanger before the pin holes align. Any idea what could be out of wack with this?

u/Ok-Calendar9243 — 2 months ago
▲ 2 r/MP5

Cocking tube hanger vertical misalignment

Just got a MP5 KAC ras and went to install it on my HK53 clone. The front mounting hole doesn’t quite align? Seems like it’s like 1/32” off. Looking at the triple ring with the cap off from the front it seems like the cocking tube is slightly displaced upward.

The RAS fits my MKE MP5 fine. All the other polymer hand guards fit my HK53 fine. Is this a “hit it with your purse” situation?

reddit.com
u/Ok-Calendar9243 — 2 months ago
▲ 23 r/40_mm

Better DIY for long deftec cases

Was tinkering with some sample parts and found a thick plastic cap that fits ALS and deftec casings perfectly. Reinforced the bottom so it doesn’t blow through and I think it may be better than the printed option. True pressure expands the walls enough to press the walls firmly against the side of the case as the originals were designed to do. They also seem to have potential to load in sort cases as sort of buckshot cups. I’ll have to test it more but the red caps are produced in bulk and are super cheap. Might need to shorten them to leave the same payload capacity as originals though.

u/Ok-Calendar9243 — 3 months ago
▲ 39 r/40_mm

Real vs ‘fake’ m79 wood stocks

I got to compare a Spikes tactical 37mm m79 clone to a real 40mm m79 recently. Took some pics of a few differences. Some of the “wood m79 stocks” that have been in GB lately are modern Spikes stocks, fortunately they’re very easy to tell apart.

Main difference is the “heel” of the grip just in front of the screw hole where your pinky would be is very angled on the Spikes and is more rounded on a real M79 stock. Another difference is the inner edge of the real M79 surfaces that mount against the sides of the receiver have 2 separate flats of wood set into the stock, the Spikes is 1 solid piece.

Both stocks look good, just so you don’t pay new old stock prices for modern repro prices.

u/Ok-Calendar9243 — 3 months ago
▲ 48 r/37mm

Spikes M79 37mm

Upgraded to a 40mm one and it’s tough to justify 2 m79s in this economy lol.

It was surprising how much sturdier the barrel of the 37mm is than the 40mm. 1/4” steel vs much thinner aluminum.

u/Ok-Calendar9243 — 3 months ago
▲ 26 r/40_mm

A few new cases

I need to work on printing some clone short case smoke/aerial bangs for these cases.

Also I have now seen gas seal failures from about every single manufacturer (military m1029, CTS and DefTec). About 10% of the gas seals I find have the skirt ripped off from firing, this is similar failure that’s seen in printed gas seals. I guess it’s comforting that failures in printed components doesn’t necessarily mean they’re inferior in performance.

u/Ok-Calendar9243 — 3 months ago

MD/DO swat medic malpractice insurance?

I’m looking into moonlighting as a seat medic, pretty high chance it won’t work out but would be neat if it did. Wondering if the department’s usually provide medical malpractice insurance or that has to be bought by the physician.

reddit.com
u/Ok-Calendar9243 — 3 months ago
▲ 94 r/40_mm

Someone needs to capitalize on the new “dual use barrel/receiver” import changes

Thousands and thousands of old colt M203s and M79s abroad that are collecting dust. They should be able to be imported now in pieces as “dual use receivers” and maybe “dual use barrels” if I understand it right.

Worst case someone ships up a printed 12GA m79 and m203 barrel so that there’s an ATF approved title 1 configuration for the receivers to get imported.

u/Ok-Calendar9243 — 3 months ago
▲ 6 r/40_mm

Anyone use PerfectShot 1/4 or 1/2 power blanks?

I’m doing some load development for some less lethal reloads. I have tested Boland 1/4 and 1/2 blanks and they aren’t quite the velocity I need, but are very close. If someone could test a few PerfectShot blank combinations for velocity that would be a huge help and would save me the trouble or ordering a hundred blanks just to test a couple loads.

reddit.com
u/Ok-Calendar9243 — 3 months ago

Legal way to “blind” flock camera with no permanent damage?

Obviously permanently damaging flock camera’s is illegal, but what is the legality of shining a regular LED flash light at a flock camera preventing it from capturing any usable images? That causes no permanent damage.

Taking it one step further what’s to keep someone from using a small modified solar flood light (like what people use in their yard to like up their house) to keep it from capturing usable images indefinitely.

u/Ok-Calendar9243 — 3 months ago
▲ 26 r/40_mm

Finally got a chronograph for working up less lethal rounds

Trying to dial in the right combination of components to load a bunch of deftec and ALS rounds back to factory spec.

Standard 25-30g foam batons are meant to go 315-345fps, extended range 400fps

Lots of things like vent hole size, and how much empty space is between the case and projectile affect muzzle velocity.

I’ve had great luck with the fiocchi blanks for getting standard velocity in just about any case with a small vent hole, 1/4 power boland for extended velocity in small vent cases.

Still need to try some fine tuning with various thickness burst disks and a good load for m212 cases.

Will work testing velocity for bean bags and rubber buckshot next.

u/Ok-Calendar9243 — 3 months ago
▲ 32 r/40_mm

Crushable powder baton

Trying to recreate some of the “crushable OC/CS foam baton” rounds that law enforcement sometimes use.

Trimmed down foam golf ball to 40mm, used press and 30mm circle die punch to cut the middle out, filled with about 4g of talc powder before gluing the tip back on and gluing the whole thing to a plastic base.

It made a small but noticeable cloud on impact with the target. I’d like to find a more firm and brittle foam to try at some point which may perform better.

u/Ok-Calendar9243 — 4 months ago