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 9mm Conversion to Marushin XM177E1

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Cerwyn
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PostSubject: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:25 am

***Post by Kickback***

Hi Guys,
Well here is another custom conversion by myself this time of the xm to fire the 9mm cp cartridge.
I have always liked the look of the m16 series of rifles with the uzi stick mag hanging out usually used by some American special unit at one time or another so i thought i'd have a go.
Once i had purchased all the components needed it was just a case of custom fitting and adapting the xm to run with the shorter cartridge :?


It does look good ah!
There were several feed problems to overcome,as the smaller cart is a lot further from the chamber so i had to make an extended feed ramp to make up for it,the detonator had to be shortened and the mag and hold open catches had to be modified to,but once all was done it was worth all the time and effort as it fires better than the Marushin .223 carts.

I am using the Mullberry field 9mm carts but i only have 5 so i havn't had a better burst than that but i'm getting some more soon Very Happy
The mag used is the older marushin uzi mag,the one with the single coloum,as the usual mag was a pain in the arse to get to feed properly.I am going to make a shorter barrel and flash hider too soon.
If you are very brave here is a short video of the 9mm xm in operation,but be warned my beer belly take centre stage Embarassed you have been warned!!
http://illiweb.com/fa/pbucket.gif
Enjoy
Kickback


Last edited by Cerwyn on Wed Oct 08, 2008 5:08 pm; edited 5 times in total
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:38 am

Post by Mark

Very nice Kickback! I too, had been looking into making one of the 9mm M16's. I was going to use all Marushin parts in it (other than the magazine well insert. The use of the Marushin Uzi magazine with a magazine catch hole machined in the magazines side would allow the original M16 magazine catch to be used.

Arggg! My eyes!!! Did you shoot the video with a cell phone? It seemed a little "grainy" to me.
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:39 am

Post by kickback

Thank you for your kind words ,Mark the video was shot on a decent camera,just that my son filmed it I too used the Marushin xm it is the factory version with the heavier bolt carrier,i might change it to the newer aluminium carrier to get a better rate of fire

Again thanks

Kickback
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:41 am

Post by Madmike

Wow! The Colt model 635! Great work, mate! A short barrel and A1 style birdcage flash hider will even make it look better. (As far as I know the 9 mm version has no forward assist and a special, large case deflector. Anyway a top notch model!)

And the best part: it fires and is reliable! Great!

Here is a picture of the original SMG:


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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:41 am

Post by kickback

Hi Madmike,

Thank you for the reference pictures,i wasn't sure what flash hider to put on it,now i know

It was a good project to work on...but what to do next

Cheers mate

Kickback
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:42 am

Post by 8ace

Cool mod.

Never seen an M16 firing 9mm any idea why they did it
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:42 am

Post by MadMike

No problem. It is a picture I found on the internet. If memory serves me I have seen versions without bayonet lug too, which would make sense as the short barrel prevents installation of a bayonet anyway.
One thing you will notice is that even current issue models have the A1 style rear sight as a sight for ranges far beyond 100 m does not make sense on this SMG. So it is truly an A1 series model (model 6xx series). But they may have A2 style psitol grips and stocks, check this: http://www.colt.com/mil/SMG.asp

A real nice modification, and exactly my cup of tea as I am too keen on those AR-15s.
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:43 am

Post by Stinger

I have SO much respect for you! That's a very cool conversion. Did you fill up the magazine well on the sides so it only accepts the thin mags?

Also, why did the special forces use 9mm insted of 5.56mm? I guess they hit harder up close. But the 5.56 moves so much faster and further.
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:44 am

Post by kickback

Madmike,thanks for the info...Stinger, i think they used the 9mm version for cqb situations but i'm not 100% sure,as for the mag well i used an adapter made specially for this purpose but i have it so that it can be removed and revert back to the usual mags instead of a perminant fixture,but i am concidering drilling and using roll pins to permanantly fix it in place

Kickback
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:44 am

Post by 2sharp



X-tremely cool

I always thought the 9mm version looked goofy, it handles well and it is really easy to use if you have earlier experience with the Ar15/M16 range of firearms.
I fired one some 5 years ago and was quite impressed on it's controllability, somewhat similar to the Mp5.
As it is quite a large envelope for the 9x19 it makes sense.

Very impressive conversion! If you decide to use rollpins to make the mag. conversion more permanent it'll be even cooler
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:45 am

Post by Claymore

as always kickback i am impressed, i have a few mulberry field 9mm rounds that i have never used so i will bring them over and you can try a few more rounds in it. Is the uzi mag the only mag that will fit, i take it the extractor was fine and did not nee adjustment.
again great job mate
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:46 am

Post by kickback

Hi Claymore,

Look forward to it mate.the conversion unit i used was for the uzi mag,i'm not sure if they do any different ones as i've never seen any other type of mag used in the 5.56/9mm conversion.

I'm working on making the large shell deflector now and shortening the dust cover to make it more like the m635


Cheers

Kickback
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:47 am

Post by Madmike

Way to go, mate! I did not dare to suggest that! Great! Love this model ...

Here is one more pic from the Colt website:


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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:48 am

Post by Stinger

The more and more I look at this conversion I love it.

I just returned from a trip to the states where I visited a gun range where you could rent and fire almost any gun you can think of. It was heaven. I fired a carbine full-auto M16 at Osama Bin Laden targets while the person next to me was shooting a M249 para SAW machine gun. SO AWESOME.

One of the many guns you could rent was a 9mm M16.

Could you link me or post soe pics of the conversion kit used to make the mags fit?

Thanks
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:49 am

Post by InEvasion

As I remember, this type was/still is used by the D.E.A (Drug Enforcement Agency) and Coast guards. It is a truly stunning weapon in terms of its unique look. So many M16 variations are basically the same, this one, however, always stood out.

Well done man, damn good job and like the vid. My only advice, get some more carts!!!
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:49 am

Post by kickback

Hi Guys,

Here is a bit of an update on the 9mm conversion.Thanks to all the pics of the genuine m635 ( thanks Madmike) i have been able to make my effort look a bit better,i have upgraded the pistol grip,sliding stock and flash hider and i think it looks a lot better now.
I'm still having btrouble making a case deflector that looks right but i'll get there in the end.
Here she is;-




As you can see the roll pins are now in place holding the mag well conversion permantly in place.

Thanks
Kickback
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:50 am

Post by MadMike

Nice, man, very smooth! She´s a real beauty! I am very impressed by your skilled modification. This model is great! I like the fact that the gas pipe is missing, something that is genuine on this blow back version of an AR-15 (the 5.56 mm AR-15s are gas operated and feature the gas tube, but the 9 mm versions are blow back operating). This must be your masterpiece!
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:51 am

Post by 8ace

I didn't realise how popular these are and what you can get for them

http://www.rockriverarms.com/item-detail.cfm?ID=9MM0026GBASY&storeid=1&image=9parts07.gif&CFID=973437&CFTOKEN=29135142
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:51 am

Post by kickback

Thanks 8ace,that site is great its a shame they will not sell outside the U.S. and the case deflector is only $12 ,so if any forum member in the US is willing to get one for me that would be great,obviously i will pay all shipping costs etc

Cheers
Kickback
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:52 am

Post by fightdesigner

In response to earlier questions about why operators would want an AR15 in 9mm for CQB... I think the main advantage is penetration- less of it! If you and your buddies are raiding a drug runner boat, or a house, and you've all got Class II or III vests on and are shooting in who knows what direction, it's best to have a round that isn't going to go through two walls and hit the neighbors, or through your partner's vest and kill them (Most police officers that are shot get shot with their own or another police officer's weapon, or at least I've heard that in the past from police).

The 9mm round, especially in hollow point, is less likely to go through things (walls, vests, bad guys) and hit something you don't want it to. Plus it's cheap and easy to get, you can carry more rounds, the ammo could be interchanged with your sidearm as needed, etc.
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:53 am

Post by 8ace

It has to be a major bummer to be shot by your own wepons


I'm sure i could wip up a deflector and mod the ejection port door and then sort out how you want to mount it.
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:54 am

Post by fightdesigner

As they put it in the Community Police Academy I went to a few years back- How many of the fights an officer is involved in have a gun involved?

All of them.

There's a reason most departments require Level II or III security holsters, pistol leashes, or other devices to try to keep someone from being able to grab your gun and use it. Sadly, it doesn't always work. Also heard of a number of cases where, for example, there were officers on both sides of a doorway and someone burst out the door and attacked one officer. Defending officer shot the attacker several times, but also struck their partner several times, since he was right behind the attacker. Crap like that happens far too often.

Most bullet 'proof' vests that are issued by police departments are designed to protect up to the caliber of bullet used by the officers wearing them, since that's what they're most likely to be shot with (and since it usually covers the most common street weapons). Rifles have much better penetration though- which is a good thing if you're shooting at armored soldiers, people hiding behind cover, vehicles, etc (as you're more likely to do in the military).

Thus the popularity amongst Law Enforcement types (which can include Coast Guard, Special Forces working in civilian areas, etc) of MP5s, these 9mm modded AR15s, and similar types of guns, usually with hollow points to also limit over-penetration.

I imagine it sucks to get shot with someone else's gun just about as much as it sucks to be shot with your own, though, all else being similar. Getting shot pretty much sucks all around, I'd say.
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:55 am

Post by MadMike

By the way, what stock did you use for the modification? Did it need a new stock tube? And the magazines, are they Marushin or real UZI ones?
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:55 am

Post by kickback

Hi Madmike,

I used the g&p LE style stock from the airsoft version for the conversion,it has a bit of a wobble similar to the mgc m4 range but i used the trusty felt pads to sort that out.The mag is a Marushin single coloum mag,used on the old style uzi's,i found the double stack mags very had to use as the bolt just wouldn't pick the rounds up properly.
I hope this helps mate,especially if you are doing the same conversion.

Cheers
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PostSubject: Re: 9mm Conversion to Marushin XM177E1   Sun Aug 24, 2008 11:56 am

Post by kickback

Hi Guys,

Just a quick update on the m645 conversion,i have recieved and fitted the large case deflector ( a big thank you to Jlerr2,for sending it to me )
and cut down the dust cover and i think it looks really good now...then again i would!....I have also modified the feed ramp and detonator again so now it accepts the better p220 carts and works much better especially as i have changed the bolt carrier from the heavy factory version to the lighter kit version.
One problem though the trigger snapped in half on me whilst shooting it the other day doh!.so a replacement is on order from our man Francky,and as soon as it arrives i will get some video posted.
Well what to you think





Cheers
Kickback
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