Shark413 Posted September 8, 2004 Report Share Posted September 8, 2004 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 cheap 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 10 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 Here is the mock-up and the final parts Here is a close up of the rear bracket Here are main parts here is the gas tank and handguard reinforcement strap Air line routing, thru the handguard looped inside finished gun Link to post Share on other sites
Shin_Kudo Posted September 8, 2004 Report Share Posted September 8, 2004 Seen it on socal, but I gotta say again, that gun kicks so much *albatross*. I just might make my own like it at some point.... What is the mount made of, anyway, is it metal or plastic, and is it machined? Yet another question, do you think it'd be possible to install a larger gas tank? Maybe put two of them in parallel? That would improve practicality... Link to post Share on other sites
urbandork Posted September 8, 2004 Report Share Posted September 8, 2004 very very nice. Its always nice to see a custom mod. Ive alwaysed like the master key idea however, being a smaller guy, ive always thought them to big. If i were to set up a master key it would be super short. Maybe one of those 4 inche barrel AOW shortened shotguns systems under an m4 or perhaps a 733 lol Good job Link to post Share on other sites
Azrael Posted September 8, 2004 Report Share Posted September 8, 2004 saw off the barrel of the shotgun, and you're done! heheheh Link to post Share on other sites
R22Master Posted September 8, 2004 Report Share Posted September 8, 2004 Very nice. It's great to see more innovation in this game, and this is the perfect example of a job well done. Keep up the good work... (Thread moved to the Projects Forum) Link to post Share on other sites
cazboab Posted September 8, 2004 Report Share Posted September 8, 2004 hat am one of teh best guns eva! i realy like the fact the shotty is gas and not a springer. i gotta get me one of those. Link to post Share on other sites
Connery Posted September 8, 2004 Report Share Posted September 8, 2004 That is one of the best guns I have ever seen. Since it's gas gun too, it ought to pack quite a punch. Link to post Share on other sites
rhino Posted September 8, 2004 Report Share Posted September 8, 2004 That's impressive! Well done mate Link to post Share on other sites
Sledge Posted September 8, 2004 Report Share Posted September 8, 2004 If I ever get an M16/M4, that is EXACTLY what I want to do with it. Respect, dude. Link to post Share on other sites
Shark413 Posted September 8, 2004 Author Report Share Posted September 8, 2004 The brackets are made out of 1/8 thick aluminum strap. They were formed by rough cutting it to shape with a power hacksaw then hand filing. The hard part was drilling and tapping the holes in the shottie. The original gas tank I used was small and fit nicely in the handgaurd, but it did not supply enough gas so I have since modified it and attached a external Co2 system. Seen it on socal, but I gotta say again, that gun kicks so much *albatross*. I just might make my own like it at some point.... What is the mount made of, anyway, is it metal or plastic, and is it machined? Yet another question, do you think it'd be possible to install a larger gas tank? Maybe put two of them in parallel? That would improve practicality... <{POST_SNAPBACK}> Link to post Share on other sites
Ilovenapalm Posted September 8, 2004 Report Share Posted September 8, 2004 Sweet I've got a sudden urge to chop up my m1100 and bolt It to my m15.You might want to look into fitting a AN/PEQ 2 Battery Pack somewhere and using It to house a larger gas reservoir.Is It difficult to hold/carry? Link to post Share on other sites
enzo100 Posted September 8, 2004 Report Share Posted September 8, 2004 VEry Very Nice!!!! That is a design that quite a few people have tried and failed. I saw one guy at a field with a $10 pump shottie duct taped to the bottom of an MP5 lol. Sometimes it works sometimes it doesn't. But this is nice. Excellent craftsmanship on the bracket and gas tank and well everything. Keep it up! -EnZo- Link to post Share on other sites
Catchv22 Posted September 9, 2004 Report Share Posted September 9, 2004 Looks very good! Link to post Share on other sites
MAKKOO Posted September 11, 2004 Report Share Posted September 11, 2004 I just notice this thread and it looks really good!!! I will like to have one but with a shorter barrel. Link to post Share on other sites
rhino Posted September 18, 2004 Report Share Posted September 18, 2004 i quite like the look of the shorter M870's on the M16. I'm waiting for someone to do a version like the one below, as it would make a change having a handle to help pump the round. Note: This is just a mockup to demonstrate the layout mentioned. Link to post Share on other sites
TMC Posted September 18, 2004 Report Share Posted September 18, 2004 Kick *albatross*. I'm guessing it took a whole lot of effort to align the barrel right? Link to post Share on other sites
Crazy_Harry Posted November 10, 2004 Report Share Posted November 10, 2004 superb, nice one mate- this is exactly the project I was about to put up on these boards! now, a couple of questions- the gas tank: is this the removable tank from a pistol grip version 870, or from the fullstock version? I ask because I only ever find the fullstock version available everytime I do a search, and want to know if you'd sussed a way of getting the gas tank off this version? the bracket: with the screws in the handguard holding the shogun to the foregrip, is the bracket necessary, or is it more of a "belt and braces" approach? I ask because my talents in the metalwork department are about as impressive as Accrington Stanley's first 11 I was hoping to rig it so the arrel/foregrip would take most of the weight- how likely do you think this to be? thanks for your help, and once more, well done that man! Link to post Share on other sites
judgeman Posted November 12, 2004 Report Share Posted November 12, 2004 i'm doing this with my M3 shorty once my VN M4 arrives.....damn that is cool >< Link to post Share on other sites
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