The "Masterkey" Project is now completed

[shark413]

Hi all, I had an earlier post where I had a mock-up of a "masterkey" conversion I was working on. The mock-up consisted of 2 springers I put together to see how everything would fit and what it looked like. I received my CA M15A4 and proceeded to attach a Maruzen 870 pump to the M15A4. A small gas tank from a cheapo NGB was used as a new gas tank that fits in the handguard.

I made some heavy duty brackets that attach the body of the shottie to the forward takedown pin. The bracket is attached via 4 allen bolts that I threaded into the 870's body. Also, there is a 8" strap in the handguard that is attached to the 870 with 2 #10 stainless steel machine screws. Two holes were drilled/tapped into the top of the shottie. It is rock solid as is, but I also have a bracket that attaches the shottie and M15A4 barrels together. I removed it because I didn't like how it looked.

It is truely a beast weighing in at 10 lbs and the small gas tank is only good for about 6 shots, but it packs a big punch and is something unique. I have attached a few pictures, check it out.

Here's my new M15A4
http://www.pix8.net/pro/pic/2813KUH0k/95746.jpg

Here is the mock-up and the final parts
http://www.pix8.net/pro/pic/2813KUH0k/95747.jpg

Here is a close up of the rear bracket
http://www.pix8.net/pro/pic/2813KUH0k/95750.jpg

Here are main parts
http://www.pix8.net/pro/pic/2813KUH0k/95751.jpg

here is the gas tank and handguard reinforcement strap
http://www.pix8.net/pro/pic/2813KUH0k/95752.jpg

Air line routing, thru the handguard looped inside
http://www.pix8.net/pro/pic/2813KUH0k/95753.jpg

[Slacker]

Congrats on a job well done! Looks like you put a lot of effort into it and it finally paid off. One thing is for sure, I would hate to get Masterkeyed!

[Fox]

Kudos to you. Very nice work dude. Extremely detailed, and well thought out. I hope it serves you well.


Cheers
Fox :D

[shark413]

Hey guys, thanks. I almost forgot to include a picture of the entire completed project.

http://www.pix8.net/pro/pic/2813KUH0k/95748.jpg

[KingTiger]

Bravo! Let us know how this badboy fares in combat. Keep up the good work man!

[Dougrich]

Good Job, That's awesome, but wouldn't be easier just to get an m203 no offense or anything.

[Kaiser78]

I think it looks great. Its always nice to see custom guns. Great job.

Kaiser

[Titleist]

Cut that barrel down a tad, to even it out, but nice work, very slick, and not seeing the gas tubes is very nice. Great work

[Slacker]

Originally posted by Dougrich
Good Job, That's awesome, but wouldn't be easier just to get an m203 no offense or anything.

In that case, it would no longer be a "Masterkey" but the same setup weapon 80/100 people have on their armalites.

Originality is "key" here...

[BoardB264]

Wow, that thing is pretty badass looking. Keep up the great work!:D

[BaDunkaDunk]

Looks sweet. I woudl cut the end of the 870s barrel off tho to make them about the same size.

[jimmypop]

looks nice

[CoOk!3 6()|)]

Excelent work my friend, but I would like to pose a question, is it at all dificult to cock? It appears the pump action is a good distance from the pistol grip on the m16. Have you run into any problems or do you find it comfortable for extended use?

Thanks!
Scott

[shark413]

CoOk!3 6()|)

Yeah unless you are 7 feet tall the pump is almost unreachable when shouldering the weapon. You can fire the first shot from the shoulder position, but to use the pump you have to fire it from the hip. I modeled it after the gun "Billy" used in the movie predator. I don't remember it (the shotgun) being fired in the movie. And actor Sonny Landham "Billy" is about 6 foot 4 inches. May be I should have used a semi-auto shottie.

[Agent 47]

keep in mind that such shotguns are breaching tools exclusively, however, im sure they work wonders on personnell, they just arent meant for such. Great looking piece. If you want to sell it to me, feel free to shoot me a PM ;)


Drew

[Tripod]

Originally posted by Agent 47
keep in mind that such shotguns are breaching tools exclusively, however, im sure they work wonders on personnell, they just arent meant for such. Great looking piece. If you want to sell it to me, feel free to shoot me a PM ;)


Drew

Hence the term "Masterkey". Great looking gun although I like it more on the M4A1.

[gmaximus]

Very professional. Is the shotgun held on only by the bracket that attaches to the takedown pin, or is there something else I don't see that holds the front end of the shotgun to the M16?

[Faust]

i just have to say thats so awesome

[D_Man]

Originally posted by gmaximus
Very professional. Is the shotgun held on only by the bracket that attaches to the takedown pin, or is there something else I don't see that holds the front end of the shotgun to the M16?

See this Pic:

http://www.pix8.net/pro/pic/2813KUH0k/95752.jpg

Its bolted onto the lower fore grip half as well ;)

[D-Boy]

You could get a tac sling from Slingsoly.com and you could used tothe shotgun easliy.

Just a Thought

[gmaximus]

oh.. duh. :D

[Sgt Dremel ~~~[[]]>-]

hey instead of cutting the 870s barrel just stick a silencer on the m16
lol a timid .223 with a booming 12 ga under it for moral support

[J Teezy]

yeah but thats pointless if you ask me. Its like having a silencer on a gun with a m203. I say chop the barrel

[Agent 47]

But see, supressors are used with M203's. They are used for cave fighting. When your in a cave, the report of a weapon is loud enough to damage your eardrums. So you can fire all day long in a cave with a supressed rifle. The m203 is just to seal the cave when all is said and done.

Drew