View Full Version : Project idea, would enjoy input
hizzungfarlow
06-21-2010, 06:57 PM
Recently while looking at ps90s and 5.7 handguns and rolling my eyes at the prices, i had an idea.
With an 11" AR57 upper (http://i50.tinypic.com/14v4l1l.jpg), a hammerhead stock adapter (http://www.exilemachine.com/hammerhead.html) (preferable) or monsterman grip (http://www.monstermangrip.com/MMG_AR.php), and a pistol registered AR, I could have a comparably sized 5.7 "pistol" when compared to a PS90. And even after adding a red dot and some MBUSes and possibly a TLR-2, the price would be less than a bone stock PS90.
Does anyone know if there's something I've missed with this? Does an AR pistol have to have a pistol grip? And has there been a ruling on the Angled Forward Grip from Magpul on whether it makes a pistol into an AOW? because if it does, it'll be better to SBR the receiver and just craft some sort of buttstock that connects to the buffer tube and the stock adapter like a ㄷ leaving space for the thumb.
Clinotus
06-21-2010, 11:40 PM
Do you live in California, is this why you are looking at the hammerhead or monstergrip combination?
Here is a link to the ATF stance on Adding a Vertical Fore Grip to a Handgun (http://www.atf.gov/press/releases/2006/04/041006-openletter-nfa-adding-vertical-fore-grip.html)
If you add the Magpul AFG to a AR15 pistol, you will need to pay the additional tax stamp as the firearm has moved from being a pistol, defined as:(A) a firearm which has a short stock and is designed to be held and fired by the use of a single hand;, into a firearm that is below length and has the ability to be fired with two hands.
Depending on the hassle involved it would probably be easier to get the PS90 and chop the barrel down (tax paid, of course).
I like the concept and the outfitting you are going with, but I'm not a fan of those particular grips. If you are stuck in CA why not instead pin the magazine however they do and shoot it as a single shot?
hizzungfarlow
06-22-2010, 12:00 AM
I live in Oregon but may be moving to Cali soon for a job as a PA and some photography/videography work.
BUT, I wanted to go with the hammerhead because it doesn't make the receiver much taller meaning with a high clearance vortex strikefire on the upper, it's still not as tall as an optic-less PS90.
I have a Prince50 on my .458S rifle so it's カリ legal but aside from the 10 round mags FN sells, I'm not sure what would need to be done to make this build legal since it's going to be a pistol AND doesn't use the magwell to hold magazines and instead dumps empties. Should I get the job, I'm going to contact some the people on calguns about its legality but for now, since I still live in Oregon, I only have to comply with sensible laws.
The AR57's monolithic upper receiver would end up being a horizontal foregrip that would have to be used to fire it properly when using the hammerhead I think. But even on every AR-15 pistol I've seen, I see people using the furniture or magazine to steady their shot, i don't think I've ever seen a 2-hands-on-grip grip when using an AR pistol*.
*I've only seen four shot though so I may be full of poohdung.
Miso Beno
06-22-2010, 01:57 PM
Im pretty sure SBRs are not kosher in California. At all. Also, you may have trouble trying to get your AR-15 lower receivers into California. Seriously, California sucks for guns.
AR57!!!!
AR57 makes a bullet button upper with a muzzle brake instead of a flash hider if you wanted to go with a proper 16" gun, and then when you were finished living in the PRC you could have a gunsmith cut the barrel down to SBR length.
But even on every AR-15 pistol I've seen, I see people using the furniture or magazine to steady their shot, i don't think I've ever seen a 2-hands-on-grip grip when using an AR pistol*.
But the handguards are intended to heat shields, and the magazine well is intended to be a magazine well. Just like a receiver extension isn't a stock, it's a receiver extension.
hizzungfarlow
06-22-2010, 03:51 PM
Im pretty sure SBRs are not kosher in California. At all. Also, you may have trouble trying to get your AR-15 lower receivers into California. Seriously, California sucks for guns.
AR57!!!!
AR57 makes a bullet button upper with a muzzle brake instead of a flash hider if you wanted to go with a proper 16" gun, and then when you were finished living in the PRC you could have a gunsmith cut the barrel down to SBR length.
But the handguards are intended to heat shields, and the magazine well is intended to be a magazine well. Just like a receiver extension isn't a stock, it's a receiver extension.
Yeah, I joined calgun so I could get some info from their as well. When I had the idea first, I envisioned replacing the brake that comes on it with a carbide tipped vortex and was thinking of it as a truck gun. Then I remembered California is insane. Maybe the job will really suck so I'll not try for it. Or I'll be too broke to build the pistol and it'll sit as a dream until i'm done in cali.
hizzungfarlow
06-28-2010, 03:34 AM
I'm definitely going through with this build with these parts:
Noveske lower receiver
11" AR57 upper
CMMG Striker Vortex
AMBI safety
Hammerhead Stock Adapter (aluminum, owner of Exile said he still has some left, new ones are polymer)
TLR-2
MBUS2
Reflex Sight
Paracord wrap on buffer tube
If it ends up being AOW'ed:
AFG-2
If it gets SBR'ed:
AFG-2
ACE AR15 Ultra Lite put in the HSA and oriented upwards.
I'm debating sand blasting off all the black on the components (save the magpul stuff obviously) and clear coating it so it keeps the aluminum sheen on it with black accents or giving it a digital urban camo look.
Also wondering about some sort of modification to connect the stock's tube to the buffer tube to close the "loop" so I can loop it on a door hook without worrying about vibration making it come off somehow.
Clinotus
06-28-2010, 03:54 AM
I dont think you can SBR anything in CA without one of the near impossible to obtain 'Dangerous Weapons' permit.
hizzungfarlow
06-28-2010, 03:59 AM
Yeah, if I SBR it, it'll just put in my safety deposit box before I head into Cali. The CMMG Striker Vortex is probably verbotten there as well.
Any suggestions for a compact reflex sight?
hizzungfarlow
06-30-2010, 06:18 AM
Mockup of the AOW build: It looks like ass because I don't have a tablet anymore and i only spent five minutes on it. bloody thieves!
http://i46.tinypic.com/5k4njd.jpg
Miso Beno
06-30-2010, 09:59 AM
Removing the finish from your metal parts, even with clear coat is what we in the industry call a "bad idea." There are plenty of products you could use to achieve the same look without compromising the surface hardness and abrasion resistance of your gun.
http://www.kgcoatings.com/
http://www.lauerweaponry.com/
http://www.ceracoat-ceramic.com/English.htm
Or you could have it sent off to any number of dealers. (I recommend doing this before building it into an SBR to cut down on paperwork).
http://southridgearms.net/
http://www.rainierarms.com/?page=shop/detail&product_id=1531
hizzungfarlow
06-30-2010, 03:25 PM
Removing the finish from your metal parts, even with clear coat is what we in the industry call a "bad idea." There are plenty of products you could use to achieve the same look without compromising the surface hardness and abrasion resistance of your gun.
http://www.kgcoatings.com/
http://www.lauerweaponry.com/
http://www.ceracoat-ceramic.com/English.htm
Or you could have it sent off to any number of dealers. (I recommend doing this before building it into an SBR to cut down on paperwork).
http://southridgearms.net/
http://www.rainierarms.com/?page=shop/detail&product_id=1531
I shall look into that then. I also debated a subdued (grey and dark grey over the black) camo job.
Clinotus
06-30-2010, 06:07 PM
Mockup of the AOW build: It looks like ass because I don't have a tablet anymore and i only spent five minutes on it. bloody thieves!
http://i46.tinypic.com/5k4njd.jpg
That looks both disgusting and awesome at the same time, more on the awesome side though.
hizzungfarlow
06-30-2010, 07:57 PM
That looks both disgusting and awesome at the same time, more on the awesome side though.
Heh, i know the feeling, I think it's hideous and yet, there's something about it. Most of the hideous I feel for it comes from the crap job I did shopping it. (with my right hand as well, I can't stand using a mouse in my dominant hand, feels wrong.)
As SBR
http://i45.tinypic.com/zob5mh.jpg
More likely, though with an A2 buffer, then both tubes can be wrapped (paracord sheath?) somehow to create a thumbhole stock like the P90s. A single point sling to it and it'd be good to go methinks.
Miso Beno
06-30-2010, 08:53 PM
More likely, though with an A2 buffer, then both tubes can be wrapped (paracord sheath?) somehow to create a thumbhole stock like the P90s. A single point sling to it and it'd be good to go methinks.
The AR-57 needs a carbine receiver extension and the AR-57 buffer to function properly.
hizzungfarlow
06-30-2010, 10:26 PM
I meant A2 buffer tube
AR57 - A2 Buffer (233.5g 6") designed for standard "A2 type" / "Butt" / "Rifle" Stock lower receivers. (http://www.57center.com/6.html?m8:cat=/Parts%20%26%20Accessories)
Miso Beno
06-30-2010, 11:29 PM
Oh neat they finally came out with a longer buffer. Bout time.
Clinotus
06-30-2010, 11:48 PM
Green light.
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