HuttArmouries

not without an external propellent. its just down to the cylinder size you can fit in them and how much piston travel you can get. Id still call 200 fps pretty good considering it has a whole blowback mech in it too

Patrol base already have them in stock. thats where I bought mine. https://www.patrolbase.co.uk/cyma-cm-136-grach-ebb-mosfet-edition

Yeah. I had one of the original raptor pistols when they first came out and I had it all of a day of trying to get more than 3 shots in a row before sending it back for a refund.

So ive seen these around with very limited information. Seems to be about 200fps, holds 17 bbs and has the battery in the magazine. It works on a system similar to the gbls das or some of the older guns that preceded that and some newer nerf guns. That meaning you get a mechanical trigger that releases the sear on the piston and then the motor automatically kicks in to recock that piston and make the slide cycle. Probably a bad idea to be an early adopter but ive always liked aeps and this just seems so cool ive ordered one. Ill post more once I have it. No spare mags available anywhere at the mo but its only been out for 4-5 months or so and less than that in the uk.

So in all my various dealings and buying and selling ive ended up with about 30 magazines for the kj works m93r rebranded by si. Minor problem is that noone seems to have one. Ive never seen one in the wild and no one wants to buy the mags. Secondly ive always wanted some sort of little sub machinegun as both a sidearm to my lmgs and as a nice light gun for more compact fields. and so I decided to build one. Ive made a new nozzle to work with these mags but it uses glock rocket valves and piston heads. It blows back already but obviously I cant test feeding or fps yet. Either way I didnt really expect to get it this far but it just worked first time I tested it XD. Im probably gonna go for something like a vz23 with a simple metal tube upper. Eventually a beretta mx4 storm may be on the cards since these are beretta mags. We will see how it goes.

bottom half of the belt feed mech is getting there though I still need to build in a way to attach the box mag / mag adapter. Still tweaking the hpa adapter but it now only seems to leak from the bolt holes, the top half is entirely sealed so it may just be a matter of getting a metal one so I can better seal the threads. Decided for the vn mags ill be mounting it so they come in at an angle just below the feed ramp on the side so that the hanging belt can hide the end of it. should also mean I can get lower to the ground. I had a beaten up old tm g3 bipod and the hk21e bipod seems to use the same latch mechanism so i just chopped it a little shorter and made a new block for the top of it so it can slide into the handguard caps.

Yeah Ive seen that one though since im basically modifying a rifle its closer to their colt lmg or hbar builds

You posted this just before I was about to put an update on XD. So originally I was trying to use the original mag and hide it inside the box mag which would have lead to a much larger box mag than reel steel. I was also considering chopping the mag in half and splicing it smaller until @The_Lord_Poncho Made a suggestion that had somehow entirely slipped my mind "3d print one" And so I have designed and printed a new bottom part using the top half of the original we magazine, no modification needed. To be clear this will be sent off to be machined or printed in metal before I use it but I have tested it by pumping it up very slightly with my hpa pump (while wearing safety glasses) and it does infact cycle the gun just fine though it leaks around the bolts even with o rings which a metal version will hopefully fix. Did also have to remove the paddle mag release to get the connector in a good spot. having it this short also opens up an interesting possibility. I think I am going to add onto the bottom of it a dovetail or something similar and while I will make a box mag to use I am also considering a magazine adapter for vietnam style short m4 mags. With the belt feed mechanism and a short length of dummy 7.62 the mag would be barely noticeable and id be able to run the gun without the need for a box mag. Obviously Id need to get myself a supply of vn midcaps which are hard as hell to come across right now but I think this could be a great way to use it. If anyone has any suggestion's for some other 100 or so round midcaps that would be small enough to not be noticeable Id appreciate any ideas. Also 3d printed a guide to mark out the holes on the handguard and started drilling and cutting them into some 40mm aluminum pipe. The raised ridges on the handguard will be 3d printed additions and all of the small holes are threaded for m5 bolts so I can swap the ridges out for rail sections and the offset foregrip when I get around to modeling and printing it.

I Had a kwa mp7 for a while and it was pretty good but the moment the temperature dipped at all it became a bolt action so I ended up shifting it Also the reason the tm one is 90% scale iirc is that they developed it when very little real world info for the real thing was available so they were basically trying to scale and build it from the few promo pics h&k had out at the time and it ended up a little small.

Probably but the problem is 3d prints arent gas tight so id need to send it off to be made before I knew if it worked at all. I might give it a go. See if I can effectively just make a shorter magazine body since this is what comes out of the top of the g3 mag when you take the screws out.

Having had a look actually I think it is feasable to chop the mag in half, remove a middle portion then add some guide blocks inside so it lines up, add a gasket between the two halves and bolt it back together

Not had that particular issue but I got mine off a collector so it was basically untouched when I got it

Ill pop you over a message. Im working on some moterbike bits that need printing so when those are sorted ill be doing the order

I was aware of the issues with the nozzles when I got mine so the first thing I did was take out the original and put it to one side to use for measurements. Ive run maybe 5000 rounds through it so far on my various prototypes and all of them break on the feeding tab. Other than that no issues apart from getting a hang of the selector but thats a me issue.

I have been making and testing type89 nozzles however using normal 3d printing they only last 800 shots or so. they do function perfectly during that however so im going to get a few multijet fusion printed. Problem is most of those places have a £40 miniumum order so im waiting until ive got some bits I need done for the hk21 machinegun project so I can order it all at once

i mean if anyone knows a good way to chop down the we mag id love to hear. Unfortunately its made of 2 big cast chunks and the baseplate is part of it so it would be difficult to shorten and make gas tight

Yeah. That is a possibility but unfortunately there are no short mags for the g3 I suppose maybe I can mod a vfc. Psg1 mag to fit but I have no idea if there is any parts compatability between the brands

Well the reason im hpaing it is because the base gun I have is a we g3 gas blowback rifle XD. Its literally just a matter of putting a hpa adapter in the mag. I mean once all the parts are made I might start selling kits. We will see how it comes out. Im just working on making the handguard at the mo and have done a few test bits for the belt feed mech. I mean ideally it would be great to have an onboard gas supply but I dont really se a good way to do that

So im working on a hk21 machinegun project. The base gun is a we g3 and i plan to hpa tap the original mag and hide it and the fitting inside the box mag. Anyone run a lot of gas blowback full auto around? Any advice would be appreciated as apart from testing guns I got to re sell this is my first experience with hpa.

So a while ago I started to build a hk21e machinegun based on a jg g3 but the gun was a bit screwed and I made a bit of a hash of upgrading it so That rather killed my motivation for working on that. I recently sold off that gun as part of my process of swapping entirely to gbbrs. Having watched a few explosive enterprises vids I decided to give this another go. This time the base gun is a we gbb g3. It came to me with the barrel shortened and Ive just picked up a proper hk21e style clubfoot stock for it. Im planning to model and print most of the bits for it in plastic and then send them off to be done in aluminium when im finished. This is just the first step. 1 new sight block that just sits on the cocking tube and dosent go down to the barrel. 2 front handguard cap with a block hidden under it which bolts to the handguard pinhole to keep everything rigid 3 a sleeve to go over the barrel to give it the proper machinegun profile. I have sanded and painted this bit since the proper barrel is tapered and making one of these in metal would be a pain. will probably leave it plastic. It just screws onto the outer barrel nut and gets pinned in place by the flash hider. next up is to make the rear handguard cap and order some steel or aluminium tube to make the actual handguard. Ill be building a pinhole into the rear handguard cap where the belt feed mechanism attaches. This would normally be on the reciever instead of the magwell but Im trying to make this in a way which requires as little modification to the base gun as possible. Once the belt feed assembly is made ill be making a box mag to slot onto it, fitting the guts of a 249 box in there, hpa tapping the original mag and drilling a hole in the front for bbs to feed in from a spring tube. Im not really a fan of hpa but for a gbb lmg like this its simply the best option.

Thank you both for funding my Gbbr addiction ?

Finally got round to finishing my g26 slide. Works beautifully

Looks good! Though I had to do a double take at first. That sling made me briefly think it had a thumbhole stock on it XD

It does work and its a red but incredibly grainy laser. We had to bodge a couple of cr123a batteries to it as the battery seems to be proprietary