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SIG Rattler MCX Review
Updated
17 months ago
Some time ago, I reviewed the Sig Rattler 556 and the 300 blackout. Recently, I got back my ATF tax stamp and now I have the ultimate PDW. Check this out.
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So let's just rewind a bit. Let me show you what you get with the basic Rattler, what I get straight from the factory, and then I'll show you what I could do with it with my ATF, uh, SBR tag stamp and turned it into my ultimate PDW.
Okay, so here's just the basic rattler that I got straight from Sig. Check this out.
Hey guys, welcome back to Beyond Seclusion. What I wanna talk about today is what, at least I can find, the shortest, the smallest 556 223 that you can get, same with the 300 blackout. What am I talking about? I'm talking about the Sig Rattler.
Sig MSX Rattler barrel
Looking at this, you know we've got this, this increasing movement to get as small as we could possibly be. And I do like it. You know, especially if I can reach out to two or three hundred with something really compact. To me, that's better than having something that's three feet long, because the times that I'm gonna reach out, you know, beyond 3, 4 hundred yards is just really minimal and, let's just face it - small and compact. I think seriously ups the fun factor. The Sig Rattler - we've got a five and a half inch barrel. Five and a half inch barrel on both the 556 and the 300 blackout. So the big question is - how does it perform? Oh, I heard that one - actually outstanding. I think a lot of you are going to be surprised. So, let's just talk about this Sig Rattler here, let's run through some of the housekeeping items. If not, you can kind of skip that to the shooting. What I'm gonna do is I'm gonna run several different kinds of ammo, I think four offhand that I can Think off. We're going to check a muzzle velocity and we're going to check accuracy. And then we're going to try to reach out to 200 and 300 yards with both of the 556 and the 300 Blackout, see what we can do. I've got a Romeo 3 on here for an optic. That is a really small red dot, If I can hit something out at 2 and 3 hundred yards, with an unmagnified red dot, that's awesome.
SIG MCX Rattler Pistol
- Cold Hammer Forged Carbon Steel Barrel
- 5.56 - 1:7 twist
- 300BLK - 1:5 twist
- Overall length 23"
- Folded length 16"
- M-LOK rails
- Gas Piston
- 6 lbs (approx.)
- PDW Ultra Thin Folding Aluminum Stock
- Ambi Safety and Mag Release
- Interchangeable Barrels
- QD Sling Attachments (two each side)
SIG MCX Rattler features
Let's just talk about the Sig Rattler here. It is unique in the gun industry. This is not an AR-15, it is not an HK. Some of the features that I like - this is considered a pistol. We've got our brace here. We just lift up and this folds. The grip on this is very different. It is a much shorter angle. It's around, I think 19 degrees or something. It's a small handle. I like it guys. If you're carrying it across your chest, it's much more comfortable than the angle of a standard AR-15. As far as selector fire, we have ambidextrous fire and safety on both sides. I love this, guys! Once you have ambidextrous fire control it's gonna be really hard to go back to just having it on one side. Something always comes up and you want to use one of the other sides. It also had an ambidextrous mag release. And the nice thing is that the mags are going to be exactly the same 556 or 300 Blackout. The bolt release though is not ambidextrous, is on the left side, the charging handle, sorry, same thing ambidextrous, really like it. It is not interchangeable, none of the parts on this are interchangeable with AR-15 that I'm aware of.
We've got a nice rail on top. The thing that I like about this and one of the reasons why I bought this is we can swap out the barrels relatively easy. It is not like an AR-15 with an upper, and where we pop the pins. We do have to take out the barrel, but we've got two nuts here, and screws sorry, and it comes with an Allen wrench, everything that we need for this. We loosen these up, this slides off and then there's two more that hold the barrel in. This is the AR or, sorry, the 556, essentially the upper. Both of these are piston driven, both have modifiable or adjustable gas blocks, so we can switch from, you know, normal fire to either, you know, low power or suppress. The 556 at five and a half inches (interesting - 556, five and a half inches), you cannot suppress this. The flash hider here is pinned on. It is not meant to come off, you cannot suppress this. There's too much gas and too much power coming out of here. However, on the 300 Blackout you can, and this is not the flash suppressor that came with it. The muzzle device, this is for my SilencerCo Omega, so that I can just screw that on right here like this. And that is nice to have.
The other thing that I was not aware of is - the forearms are different for the 556 and the 300. So if you get this and you get both barrels, you're gonna need both forearms grips because they are different length. That way you can reach the gas block and adjust it and change it.
What I really like is they've got arrows up here, plus/minus, and they tell you whether how to adjust it so you don't have to remember which is great for me, because I have CRS, and I can't remember. It's awesome - the trigger that comes in this, it's a two stage. It's got just a little bit of take up, and then it's got a clean break. It's got a nice reset, it's not match grade, it's not a two and a half pound pull. That's not what this was designed for.
Another thing that this has is - it has multiple quick detach options, ambidextrous both sides, same location right here and here, and then same on the other side.
Another thing that I really like about this is the magwell. It's flared, it makes it really easy to get those mags in. Now we're shooting with the 556 and a five and a half inch barrel. I will tell you - it is loud. It is really loud. People at a range with an overhead aren't gonna like you. Out here, it doesn't make any difference. It doesn't really bother me and when I'm out here in the open like this, I really didn't find a huge need to double up hearing protection. If I get back in the trees and there's anything that sort of holds that sound in, you're gonna want to double your hearing protection - the ones inside the ear and then muffs on top of it. The 300 Blackout? No, don't need that. Some of you like to skip that part, but I always feel a need to do that. Those that are interested in buying it and you want to know about it, let's get to shooting, what I'm going to do here is I'm going to test some different ammo and this was a little while ago, before, well I still could get ammo and then I couldn't. But I'm going to test these at 50 yards. We're gonna check the accuracy and go from there.
So we went just a little bit high on that one, It's hard at a really close distance. So I hit up high with that hollow.
Shooting at 100 and 200 yards
That was pretty good. With my new phone slash camera, it cuts out with loud sound so I was having a hard time hearing the dinks. This is 200 yards freshly painted, that's really, that's a great group at 200 yards, really happy with that. Let's go and see 300 because I couldn't here anything. Here, 300 yards and apparently I was hitting it. We've got some fresh ones here, I haven't hit or shot anything at this for a while.
Oh, I heard that one. Starting to drop a lot, at 300 I gotta aim really high. I wanna be honest - with a five and a half inch barrel at that distance, this greatly exceeded my expectations. I really wasn't sure what to expect, and none of them were keyholing. I didn't find a single round keyholed.
With the 556 you can see that it's, it's more than just a 22 mag. I've heard that, I've read that, and, you know, researching this that, you know, why would you get a 223 556 in such a short barrel, because it has no punch or anything. I disagree. It doesn't have the speed. We're losing a lot of speed. We're losing at least a thousand feet per second or more, but it still has punch and the big thing is compact, and we can still reach out, and we still get decent groups. And here's the thing why I wanted it - a lot of us are going for it, for the 300, sorry - this is the 556. We're going for it for the 300 Blackout barrel. The reason I wanted this with the 556 is because it's cheap and we have tons of it. And I'm getting two in one, so if I want something short and compact and be able to use my 556, and have it be effective. And I flat out argue that at those velocities and the punch that it's doing... for close quarters absolutely it's effective and I have tons of it, laying around.
There's the Federal Fusion - guys, that's awesome! That's entire box at 50 rounds, I'm happy, I'm really happy with that Romeo 3, so there's the full metal jacket federal gold or eagle, and there's the federal fusion.
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Well, that works pretty good, let's try it too. Got just a little bit of wind picking up here, one of my philosophies is if I can get it at distance, I absolutely can get it up close, and I really don't even need to do group MOA all that, because if I'm pinging it at 100, 200 or 300. I'm good to go at 15 and under.
That's what I'm talking about. We're gonna reach out over there. You can kind of see the dock down there, it's right above that 200 yards. You guys that are really big Shrek guys, this is gonna seem really, really small for you. It's challenging at 200 yards with this Sig Romeo 3.
So, I got the Federal American Eagle in here, we got better groups with that. Let's see how fast we can pull on this at 200.
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Product
Price
Store
MPN
UPC
40 S&W - 180 Grain FMJ - Federal American Eagle - 1000 Rounds
$375.00
Lucky Gunner
and 1 more store
AE40R1
50029465092547
Federal American Eagle 40 S&W Ammo 165 Grain Full Metal Jacket Case of 1000 (20 Boxes of 50)
$579.99
MidwayUSA
-
50029465092813
Federal American Eagle 5.56x45 (5.56 NATO) Ammo 55 grain XM193 FMJ 420 Rounds in Ammo Can XM193BK420AC1X
$289.00
Gunprime
XM193BK420AC1X
604544655964
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Yeah, not bad, right? Can it get better than that? Oh, yes. Check this out.
I've had this Sig Rattler for quite some time and I finally made the decision a while back that I wanted to SBR it. I finally got it back, I got the tag stamp, I got the receiver etched and now I've tricked it out with everything that I can do with an SBR. I've got my magpul, vertical grip here. I've got the collapsible stock, that I can shoulder, not a brace, I've got my Sig Romeo 4S, I've got my Viridian X5L Laser Light Combo. Man, this baby is hot, I am loving it guys!
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Let's just run through the tech and specs. That way you can see everything that I've got on this build. Also, I forgot the trigger tech - MSX trigger in here. This thing is sweet, it's like pulling on butter.
Sig Rattler SBR-PDW Specs and Features
Viridian X5L Laser/Light
SilencerCo OMEGA 300 CAL
TriggerTech SIG MCX trigger
MAGPUL M-LOK MVG Vertical Grip
Sig Romeo 4S
Just getting excited in here at 50 yards. It's really windy so I apologize for the wind. I didn't videotape the actual shooting, but I do have some shots. Let's just go take a look. We started down here, I made some clicks, I made a few more clicks, it didn't seem like it went up. I had one there and then that was the last three shots. And I simply made one more click to the left, so we should be spot on. Nice! I am super happy with that. I don't know how you couldn't be happy with that. We got a five and a half inch barrel here. Now let's go back to my new CQB range and have some fun. Should be dark enough, we can access and use the laser, do a little shooting of the chest.
We are back here at my new CQB range. I got targets anywhere from 10 yards. You can't see it, but way back there in the trees, a little over 50 yards I've got one. I've got about 14 steel targets in here. I want to start off using the Romeo and see how fast we can acquire our target.
Nice! It's dark enough back here, I actually want to use my laser. And I'm just gonna actually, I'm gonna collapse this. We're just gonna use it like this. I'm not gonna even look down the sides. Real quick here, how I have this set up is I've got my pressure pad right here, so I can hold, and I can just put my thumb here and activate it. And I know it seems like an odd thing to do a video on how to attach the pressure pad, but if you've got pressure pads, I have found this, is absolutely hands down the best way to do it. So, I like lasers! God, that is so much, I gotta do more. I need more ammo. That works. Let's just try 200. That's four out of five, and standing at 200 with a five and a half inch barrel, I'm happy. If you follow my channel, you know I've got to try three. This is gonna be really pushing it, guys, but let's give it a go. I think I hit it a couple of times. I have to go back and check on the editing. Let's try bagging it. Now you see why I love this gun and this setup.
There you have it guys, it is what it is, you decide what you think. I hope you enjoyed the video, found it helpful. If you did, come check out my channel. I got the full reviews on there if you want to see the full length of both of those videos, plus I review optics, grips, anything and everything related to gun products. You find me under Beyond Seclusion. Until next time on Gun.Deals, happy shooting. Educate our young people to guns and gun safety and be a safe and responsible gun owner.
