MCX Rattler
The Sig Sauer MCX Rattler PSB is a pistol system which can be adapted to the AR-style lower receiver with Sig's conversion kit.
Has anyone else tried adapting the MCX rattler to a self-built (SSE/bullet button) AR lower? https://www.sigsauer.com/store/media...right-face.jpg |
As with anything Sig, a lot of promised products will never be released to the market. During SHOT 2016, Sig showed an AR to MCX conversion kit:
and there have been pictures floating around the web of the kit: http://www.onpointsupply.com/images/...or_sale-19.jpg but I've never seen an AR to Rattler conversion kit. Don't know about the Rattler, but the MCX upper and the stock aren't hard to find, but the conversion block is vaporware: http://soldiersystems.net/blog1/wp-c...er-440x470.jpg I imagine the Rattler would use the same conversion block. Someone on AR15.com said without the conversion block, the recoil spring assembly would fly out after a few shots and hit you in the face. I have read that some US special forces are getting Rattler uppers on their M4 lowers (don't ask me for a link, too lazy to look it up lol) so Sig is probably making them, just not selling them to the public. I just bought the factory Rattler, but I imagine it was not possible to get the Rattler in CA as was not released before 1/1/2017, am I correct? Then you have to put it on an AR pistol lower unless you extend the barrel to 16". Is still possible to build a semi auto AR pistol lower in CA? |
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In the past, a pistol had to be built as single-shot, and then converted to semi-auto, with bullet button. At that point the upper could be swapped for something like the rattler. This gun was released in summer 2017 so no, you could not buy it as a single-shot exemption and convert it to semi-auto. And even if it had come out earlier, it wouldn't have been eligible for single-shot exemption since the barrel is 5.5" and SSE requires a minimum 6" barrel. However, if you already built up a pistol under SSE and converted to semi-auto, as I did years ago, I believe you can put this Rattler upper on it and use the sig pistol brace that it comes with. |
I want one very badly
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http://www.multihop.net/calguns/IMG_5244.jpg |
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What is needed to make the upper work on a standard lower? Anything with the lpk or lower itself. I know the conversion block is for the stock or brace.. anything else? |
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I see them on gun broker for 1800
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Is there an AR pistol upper that looks similar to the rattler?
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I don't know that it's a lot different than an MCX, other than the Virtus-MCX differences. I have an MCX and the short Blackout barrels for it are not hard to find. It's a couple inches longer than the Rattler, but a couple inches I can live with to save hundreds of dollars.
Where it makes the big difference for CA people is the folder. You guys can't have folders on rifles, but you can on pistols, I assume. I would imagine a folding brace is available or can be cobbled up. WRT just a plain AR upper, not including the buffer tube, my plain old Blackout AR pistol is about the same length as the Rattler. Of course, the buffer tube and brace makes it somewhat longer. |
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Sig includes a trigger and hammer assembly. I asked them about it and they recommended to use it because there's a firing pin safety that needs sufficient force to be disengaged. But they said an aftermarket trigger may work, or it may give light strikes. I haven't shot it yet, so don't know. Quote:
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http://www.multihop.net/calguns/IMG_5256.jpg |
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That thing is the bees knees
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The spec I saw was 19 inches and change. The lower and upper are obviously standard AR sized, since you can put the upper on an ordinary AR lower. If I do an MCX the difference would be 1.25 inches which is in the barrel.[quote]
The length spec of 19.3" that I saw probably includes the collapsed brace. A folder would probably be an inch or two shorter. https://www.sigsauer.com/store/media...-psb-3-pos.jpg edit: Oh crap, I screwed up my original post that I meant to just quote. |
I clicked this thread because I sawr 'rattler'
...obviously mean a diff'rnt kind'a rattler :) Carry on men :patriot: |
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oh la la I may have to get me one, what length is that barrel?
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Wow!!!! Nice
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if you just want the adapter, sign up for in stock notification here:
https://www.sigsauer.com/store/mcx-stock-adapter.html |
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Sig says they were supposed to already be out, but for whatever reason they're not in stock yet. I am pretty convinced these will become available soon, and they'll probably sell a lot of them. The angle of the handgrip is better for a pistol application (and they look badass). |
For Anyone thinking about putting this on a standard lower, the lower will need to be modified to allow the pdw brace.. also if the rattler had a charging handle it wouldn’t work but I think it’s side charging or a lot higher than a standard charging handle?
https://s33.postimg.cc/vboyu6mwf/5_C...E2098817_A.jpg https://s33.postimg.cc/gshtstyxb/8_C...8_CE7_C290.jpg https://s33.postimg.cc/6ifetmbmn/B83...FB954_A347.jpg https://s33.postimg.cc/x3hxp8bfz/7_A..._DF1_D9265.jpg https://s33.postimg.cc/b4bj21x6n/1_F...CAD0765298.jpg |
Is that the Sig brace or SB Tactical brace?
I have a Sig brace on order, but note that the disclaimer says the conversion block can't be used with a collapsible brace or stock. So I'm assuming I'm going to have to call on my friends with machine shops.. Did you get yours to work? |
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it didn't work on the standard lower unless I took a Dremel to the lower and took off some material from the buffer tower. I ended up putting it on my sig 556 swat pistol instead. https://s31.postimg.cc/kcpdo6217/32_...240_FB58_E.jpg https://s31.postimg.cc/i850n3v9n/5_F...0_E8_D9_BB.jpg https://s31.postimg.cc/ua0ehbp3f/130...FD415565_B.jpg |
Interesting item! I like it
Sent from my iPhone using Tapatalk |
I think the folding brace is better anyway. It makes the gun a bit shorter and CA people would get to unfold something after decades of denial. :)
http://www.capitolarmory.com/sig-sau...mpx-black.html https://s14544.pcdn.co/wp-content/up...MPX_PISTOL.jpg |
Oh, and in case any of you have been living under a rock, and haven't seen the coolest gun marketing video ever made...
Notice the Blackout empties hitting the ground. |
I need a RATTLER in my life!
BTW anyone know where I can purchase the rattlers pistol grip? I called Sig CS already and its not for sale..... Thanks! |
That is nice but $1700 for thr upper? Ouch
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Holy crap, how am I just now hearing about this?!? I need one!
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Why would a clean cut, fit, white, young, military age guy, walking around in a city of any middle Eastern country not bring suspicion? :) |
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Rattler upper on an AR pistol lower:
https://i.imgur.com/KsjLf0Uh.jpg?1 The rods on SB Tactical's MPX PDW or the stock Sig Rattler brace would definitely hit the receiver part where the buffer tube threads, but relief channels probably can be made (may possibly weaken the receiver?) Or use SB Tactical's SBPDW https://i.imgur.com/febuVvPh.jpg I didn't cycle or shoot it in the above configuration. Just a test fit. |
Nice beanz2. Is it only 300bo?
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Yes, only .300 BO. I'd shoot it more if it were 7.62x39.
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So, the AR pistol to Rattler conversion kit is now available at Osage County Guns:
http://www.osagecountyguns.com/sig-s...0-blk-tap.html $1,649 |
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