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Project TTD--XM8 Answered

Alright well I wanted to keep this relatively low but I keep pushing back the project so I thought I'd let you guys know that trauts and I are working on an XM8 with a lot of special treats. I'm kind of stuck in California without my knex (and a small tub and a half here that will do me no good. I did teach my little cousin about knex guns and showed him the Mini-er TDS though >_<) so I'll have to wait until Friday to give you anything. I also have to finish my official assault pistol. So far the XM8 is just a bunch of ideas and nothing is built yet. I'm actually not sure as trauts might have made part of it but I haven't heard from him for awhile so I doubt it. Well for my assault pistol I was planning on making my war weapon now that others have. Thank god I think we may have found the new side arm and new new sniper fad...although now we're going to have a lot of spiff and bbkwg copies. It will be an open mag blue rod fed gun. I gave it a little twist for originality--I angled the magazine. This way the ammo is put farther up for more power but now the mag acts as a hand guard and doesn't stick out. Honestly it does jam like every 5 shots or so on average. I have yet to perfect it as I only started the night before I was leaving for CA. I should be making different versions of it like a larger one with a stock and yellows for ammo and then a smaller one maybe with a slide or something for whites. Anyways for the main project trauts and I are making an XM8 with a couple different features. Some things we're hoping to accomplish. *Similar charging handle- You'll be able to cock the weapon by pulling back a lever on top under the carrying handle. *Removable mag- Once again another one of my favorite accomplishments. *Interchangeable parts- The barrel/carrying handle and the back will be made to come off easily or at least without major mods to switch between the normal assault rifle and the compact version. *Hopefully we'll come up with an adjustable stock. *A grenade launcher for D splodies- Yup we're hoping to make a mini slingshot device in the form of a grenade launcher to attach under the XM8. Finally I have one last special feature pack that deserves more than a couple asterisks. We were hoping to save this as a surprise when we posted it but I might as well tell you. The gun will be part of a kit. It will be a war gun after all. The kit will include a belt/vest/ something to carry on you that will hold side arm, maybe an assault pistol, a couple of grenades most likely D Splodies so you can refill your grenade launcher, extra magazines, and finally a spot for your XM8. We'll try to hurry and post pictures with progress reports. I can't promise that we'll include every single one of these features but we are sure hoping to. So does this sound like a good Christmas gift?


not a "charging handle"

*sigh* While they are very similar they are different. How about you search them up 'cause I don't have the time to explain it to you.

they are the same thing the bolt of the gun pull back the firing pin back to accept a round and it looks like a bolt to me

The bolt in a automatic gun is, all in all, simply the back assembly containing the hammer and stuff like that. The charging handle cocks the gun the first time. In bolt action guns the bolt is still the same thing however it protrudes out the back of the gun with a lever in which you have to manually operate each time to load a new round. They have the same function they just go about it slightly differently.


9 years ago

2009 and still no XM8? =(

I want to build a xtra spesh knx gun but so far I have no good models to work with. I don't want to copy the XM8 or anything when, eventually it comes out but I need some ideas for a cocking and firing mechanism. Btw i am newb to k'nex guns.

Sorry man. Trauts failed me. I'll have another go at it later although I'll probably ditch the shell mechanism if I can't get it worked better.

is that your version or do you like to steal fron trauts! just joking it looks good!

He basically took my base design and added onto it. It does look pretty decent but knowing trauts I'm sure our version will amaze us further.

No but it's not perfect. I'd say if trauts fails then feel free to post as it'll do an XM8 justice. It's really good and I don't mean to insult you but I just know trauts can do better.

Will you be: 1.Making the removable stock so that it attaches onto a nub on the back of the gun like the real thing (if so I have done it a while ago and may have some pics to help you) 2. post kits to make the different variants

Yes and yes. We will probably only make the normal and compact variants as those are the two with any big changes but who knows.

You could chamber the weapon to a heavier calibre for the sharpshooter. For instance baseline carbine uses yellow rod, sharpshooter uses red rods. It could work in the compact too; use blues.

you know that the xm8 only uses the standard nato 5.56 x 41mm ammo

Yes but this is not an XM8. It is made of a plastic construction toy. I think it would be an advantage, if shooting from a distance, to have the option of a heavier and more powerful round, and if you were fighting at close quarters it may be an advantage to have a shorter weapon.

Well we're just worrying about replicating a weapon not really making it a multipurpose war weapon. I'm going to make my own war weapon series after I'm done with all my new replica ideas.

Looking forward to the war series here.

Alright cool. I'll be planning basically 3 separate guns for 3 different calibers and possibly a new grenade or something. The TDAP that never got posted will be the base for the series.

For war weapons I would move the mag forwards a little (on the TDAP design) to increase power, and use a mechanism to place the trigger as far back as possible.

Done and done. I made a trigger that blocks farther back in the gun. It works very simply using a collapsing design where pushing the trigger in straightens another pieces blocking the pin. The magazine was already made to make the gun as compact as possible but keeping the magazine far up. Yes you could move it up one more farther but it is just too large for me then. I think I'll keep the smaller caliber guns as compact as possible but the largest one will be as large as necessary to get large amounts of power.

I think we'll keep the caliber at blue rods but we might be able to make a yellow rod sharpshooter version. Nice stock. We'll probably try that out.

Thanks. Also, the firing pin guide rails clip into the hinges visible in the second pic, in front of the cheekrest.

Here are the pics I mentioned; ignore the rest of the gun, it failed, but I would have otherwise posted it as my TGKT entry. Basically it is a hollow shell, the stock slider piece goes in one end and the back of the gun goes into the other.


How well has it gone so far then?

I have no clue. The rest is up to trauts and he never showed me anything yet.

i just made an xm8 with sight, it has compact and standard variants


9 years ago

Good luck on the gun!

I think you will need to see this. It might help you.


Lol we have yet to even build it. Even then I'm sorry to say that we'll probably take all the time in the world to perfect the entire system. It will most likely be our gift for Christmas like I said. Within that week it should be posted.

But, but... *trails off with tears in eyes* Thats when Mepain is publishing his gun :'(

hey will it have a mag that you can take out with the ammo still in it?

Sounds sweet! Make sure it does not use tape!

Obviously...I mean we wouldn't want to use such a rare object found only in the legendary jungles of everywhere <_< But yeah I'm sure that won't be a problem.

Nice job. My uzi is in progress, I just have to fill the frame in and test the gun before I add the stock and fake barrel...