Ender's Practical Bullpup - General

After being disappointed with the functionality of bullpup designs, I've set out to design my own. I'm not saying I'm really going to make this, but it resembles what I would like to see out of a bullpup rifle. If things are looking good in the CAD design stage, I may try to build a prototype using a combination of CNC cut parts and 3D printer parts. Firsts things first, I need to list the features I want in a practical bullpup rifle. Features I would include: -Forward Mag release (not sure how to do that) -Forward charging lever, non-reciprocating (if it was a real gun) -Thumb selector switch -Front compatible with M4 RIS systems for maximum customization -->Use M4/M16 barrels perhaps? -5.56 Model and 7.62 Model -2 Piece receiver -Thumbhole stock or pistol grip, not sure yet -Ambidextrous -Use a Ver.3 Gearbox (Ver.2 is a pain in the ass to make a motor housing) That's just for starters. If you want an idea of how it may look, take a look at GRAW's MRC. Mine will have some realism components added to make it even more plausible. [IMG]http://xbox360media.ign.com/xbox360/image/article/687/687911/tom-clancys-ghost-recon-advanced-warfighter-20060210052158552-000.jpg[/IMG] Here's the first quick sketch of what I'm trying to achieve. Keep in mind this is NOT to scale, as parts aren't properly sized with each other. That's where CAD will come in. [IMG]http://img191.imageshack.us/img191/1796/sketch1u.jpg[/IMG] Some key features I would like to point out -Trigger is attached to a double bar that goes around the magwell and is attached to the gearboxes trigger. You'll find the same setup on the AUG -Hop-Up resembles CA's newer Ver.2 hop-up chamber. This features a dial to the rear of it similar to one you would find on the G36. This makes for more accurate adjustments -Monolithic Rail system. Rail from the receiver matches with the rail system. Possible AR rail systems I may use in the design is the URX rail, one of the Daniel Defence rails, or the LWRC rail system. -Thumb selector switch. This I have to do some research on. I know ARES Tavor has it, but I'm not sure how it physically manipulates the selector plate on the gearbox. -Forward Mag release. Still got to research this too. I looked at Magpul's PDR that supposedly has this, but they reveal no details to how this was done. -The receiver will feature threads to accept all AR rail systems and outer barrels. This would allow the rifle to be setup up for CQB using a short CQBR length rail and barrel, or as a DMR with a longer barrel and rail system. A secondary barrel would sit inside the receiver of the gun to guide the inner barrel. If you got suggestions I would love to hear them. It's still a very early work in progress and it's easier to add features in the sketch phase than it is when I start doing the CAD work.

looks like a famas/SIR/wa2000 in a good way

I'll take a hundred.

I'm not sure how it can be ambidextrous since the ejection port will be behind the trigger meaning that, if you use your opposite hand, the ejected casings will hit your body.

Well, if I remember right, the MR-C uses caseless rounds, meaning no brass to worry about. And it could employ the same thing that the Magpul PDR has - a lever that allows you to choose which side the brass ejects from if it did eject brass.

[QUOTE=L_Dawg;19777940]I'm not sure how it can be ambidextrous since the ejection port will be behind the trigger meaning that, if you use your opposite hand, the ejected casings will hit your body.[/QUOTE] Haven't seen the forward ejection systems have you? Take a look at the F2000, the shells eject from the front of the gun. Magpul's PDR ejects them mid way through the gun out the sides, in a similar position to most standard rifles. With this feature you can still keep it ambidextrous. Now do I want to design that? Don't know yet. The advantage of having the ejection port in the rear is being able to open the chamber and adjust the hop-up. After 2 hours of work here's where I'm at. This is by far not a working model, but the specs are a little more accurate. The stock is roughly sized to hold a Ver.2 gearbox along with the mag. I took quick measurements off my M4 to get those values. The thumbhole needs some enlarging and the addition features need to be built in. The width of the body probably needs to be expanded too. [img]http://img190.imageshack.us/img190/6669/mk1p3.png[/img] [URL=http://img714.imageshack.us/i/mk1p2.png/][IMG]http://img714.imageshack.us/img714/8761/mk1p2.th.png[/IMG][/URL] [URL=http://img27.imageshack.us/i/mk1p1.png/][IMG]http://img27.imageshack.us/img27/5223/mk1p1.th.png[/IMG][/URL] The rail system was simply imported to this drawing. It's the same M4 RIS unit that I had printed on the 3D printer last year. Hopefully that will give you a sense of scale. It's roughly a little less than the length of a M16 would be my guess.

Looks nice. I think if you go through with this, it'd work well in the field.

[QUOTE=xXEnder007Xx;19778098]Haven't seen the forward ejection systems have you? Take a look at the F2000, the shells eject from the front of the gun. Magpul's PDR ejects them mid way through the gun out the sides, in a similar position to most standard rifles. With this feature you can still keep it ambidextrous.[/QUOTE] Shit forgot about that one. Carry on.

The ris need to be a little larger, as it looks better then the AUG but it still leaves me with that wtf empty feeling for the front. Maybe include an optional RIS front handguard thing that goes over the bottom rail. my 2 cents.

[QUOTE=BlueSaint;19780153]The ris need to be a little larger, as it looks better then the AUG but it still leaves me with that wtf empty feeling for the front. Maybe include an optional RIS front handguard thing that goes over the bottom rail. my 2 cents.[/QUOTE] Keep in mind since it's compatible with all AR RIS units and delta rings, you could mount a plastic hand guard such as the Magpul MOE hand guard (which was recently announced that it will be coming in 3 different lengths now). I'll try to draw up some quick rail covers too, I see what you're getting at, looks a bit too thin up front. In the mean time, here's some quick importing of my Modular Rail System (MRS) I built last year and printed. Full Length MRS (2 of them slapped together) [img]http://img22.imageshack.us/img22/2453/mk1mrs1.png[/img] [URL=http://img686.imageshack.us/i/mkimrs2.png/][IMG]http://img686.imageshack.us/img686/3214/mkimrs2.th.png[/IMG][/URL] Rails removed [img]http://img697.imageshack.us/img697/1736/mkimrs3.png[/img] [URL=http://img109.imageshack.us/i/mkimrs4.png/][IMG]http://img109.imageshack.us/img109/4577/mkimrs4.th.png[/IMG][/URL] Carbine Length, something just looks weird about this one. Fat in the back, skinny up front, eh, I think it needs a M203. [img]http://img695.imageshack.us/img695/8303/mkimrscarbine1.png[/img] [URL=http://img686.imageshack.us/i/mkimrscarbine2.png/][IMG]http://img686.imageshack.us/img686/7940/mkimrscarbine2.th.png[/IMG][/URL]

That looks great. Kinda reminds me of the TAR21 but with the grip moved back.

Looks like a tavor with that setup

Ender, you should come to a company with your design after you build it. Because I want one of these.

[QUOTE=DarkSamus;19787605]Ender, you should come to a company with your design after you build it. Because I want one of these.[/QUOTE] this.

Ender has a great career in 3d Modeling and art designer if he wanted. I'd buy parts from him. Airsoft Communitys are open to spending money on what they need. Look at Noobies VSR10 parts they sell like hot cakes and his designs are genius. Your custom parts can make your self a career. Even the SCS Nub. A peice of tiny rubber concaved selling for 7-10$ A pop

Looks like an AUG and an M4 had a bastard child :v:. But seriously, it looks really nice.

Looks like it's gonna be tactically tight.

Any updates?

I think you should make the Carbine, and put an M203 on it. It'll balance the gun out.

[QUOTE=Kayl;19887109]I think you should make the Carbine, and put an M203 on it. It'll balance the gun out.[/QUOTE] No, make the long one.

[QUOTE=DarkSamus;19887216]No, make the long one.[/QUOTE] Long one but create a lower rail based handguard so you don't have to sacrifice looks if you want a m203 on it.

Performance > Looks. IMO. My TM FAMAS is a ugly ass gun but damn is it reliable.

[QUOTE=Stupideye;19889432]Performance > Looks. IMO. My TM FAMAS is a ugly ass gun but damn is it reliable.[/QUOTE] Yea but the fact it is so long makes it just feel it is lacking, like look at the aug, nice gun, well the front is missing something, the aug a3 makes it look a tad more balanced. It's just my 2cents that a OPTIONAL front grip that makes the gun look whole that uses rails would be a nice addition. So you can have the comfort of a nice grip or front to the gun and a functional grenade launcher. Also: if you plan to sell a custom weapon it has to look nice or people won't bother buying it, just a little business for you there, looks sell too.

That is true. The main reason I bought the FAMAS is because it lasts forever (literally, people have some that still work from the day it was released). I knew it was kinda ugly but I didn't care. I bought my M14 because its a sexy beast but also found out its very accurate.

Actually, after looking more at the carbine, it looks way too short. Is there a way to make a mid-length barrel instead? That would be the best of both worlds, I think.

Mid length would be easy to make. All I have to do is take my RIS and chop it in half in CAD, instant midlength RIS. No further work has been done yet, too busy with school and playing ME2. Although with my spare 2 hours between class today I worked on some sketches to attach AR RIS systems to an AUG, along with 2 methods of a forward mag release. It ain't pretty, but it may more. I'll upload the sketches tomorrow when I have the time.