SIG Sauer MCX Rattler Reviews

REAL JUNK!

This CO2 gun has an extremely limited life because the gas seals in the receiver where the magazine connects are junk! After so many recharges with a new gas cartridge the seals wear out and all your gas leaks out! I know it's not the magazine because I tried a new one and same thing happens.

If you're determined to buy one I recommend getting a protection plan, for whatever it's worth. SIG should stick to making real weapons, which are probably just as worthless!

First things first, this airgun is very well made. Although the plastic on some parts may be prone to damage (charging handle, flip up sights, and stock). One big problem is that the accessories on this airgun is not (kinda) compatible with other Sig airgun accessories (other airgun handguards). Some Amazing features on this airgun are: slide locking back on last round, Not being able to put back on safe after dry fire, great blowback, YOU CAN FIELD STRIP IT, (internal) gas blowback, the magazine not looking horrible (pmag 🤩🤩🤩) folding stock, the stock not looking horrible, working small features (bolt release and assist, ambi mag release) WORKING SLING QD (only on stock....). Some very bad things about this airgun are: plastic handguard, non working handguard sling QD, flimsy and wobbly charging handle (also plastic), so light that the magazine is heavier when the gun is bare bones, non working sling QD near fire selector. The absolute best feature(s) on this gun for me is the godteir trigger, 3 round burst(I forgot the metion) and charging handle+working bolt. DO NOT! absolutely do not rack the charging handle too hard, it will literally snap.

Works good, do not overfill magazine. Great for shredding boxes.

The looks

Everything that has to do with its actual functioning

First 2 magazines jammed up. used a different ammo brand for 3rd magazine which also jammed up and magazine leaked out air as well. Tried another brand ammo, made it about 5 shots before air escaped from the seals somewhere coming violently out of the upper receiver. THE GUN LITERALLY BLEW UP IN MY HANDS. RETURNED THIS JUNK

The realism of this air rifle/pistol is outstanding. It’s polymer construction is “Tight, and Solid”. Full upper rail is scope or optics ready.

Give it more FPS, as the current power leaves a Lot to be desired. The detachable magazine is cool, but loading is tedious, and slightly difficult.

The “flash hider/muzzle break” is non-removable for those individuals who like to “dress-up” their airguns. Also, the rear AR/M4 style bolt is functional, but not quite sure what it actually does. The grip is the only thing that can be replaced (the equipped grip is Ugly but very comfortable for myself. The price may seem a bit high, but the fun with this gun on auto* is totally worth it! BTW this gun has a 3 round burst mode, a semi-auto, and safety. If your looking for a plinker, then this may be for you!

I like the overall design. Feels solid. Easy trigger pull.

Redesign of the magazine. And have spare mags available to purchase.

The one I currently have is a replacement. The first one broke internally after the first 3 bbs. I limmediately contacted Pyramydair and arranged for a replacement, which I received in about a week. I'm having a little issue with the magazine. It has to be really tightened down hard for it to not leak co2. The bb follower spring does alway push the bbs up into firing position, even after I lubed the spring and the channel. Still the majority of time it will not work properly. The bolt catch on the mag doesn't come up and catch the bolt on the last shot like it's designed to do. And I am unable to to find replacement magazines anywhere online. And I hesitate to return the 2nd gun back just for a somewhat minor magazine issue.

This is a very well made airgun. Hefty and sturdy. A blast to shoot

Spare magazines. There are no spare magazines available yet. So, use care when ejecting the mag. It breaks, you'll have a big paperweight. Make sure when introducing a new model, have spare mags available for purchase.

Sig and Umarex need to make sure additional mags are available. For now, mine will be put away until the mags are added for sale. Normally, I don't buy a new model unless spare mags are available but, I wanted the Rattler for my Sig Sauer Collection.

I like feel and the weight, plus it's FUN.

Nothing

Get one

Accuracy at 10 yards is plenty fine for what it is. The 3 shot burst is just as much fun as full auto on other guns. 12 gram Co2 operation is a welcome thing since some of us only have a half-hour to get out and plink, where an 88 gram or 90 gram would be too much for such a small window. The magazine is really easy to load with a follower that locks back, the Co2 chamber has a built in turn key so you won't need to fumble around with a separate allen key. A HUGE plus there! It's very easy to field strip, just be careful not to lose your spring upon taking it down. Handles and feels identical to it's modern firearm counterpart. It does lock back on last shot which is great. Some of these SBR style airguns do not and you end up wasting Co2. This is not the case here.

The folding stock is a very durable polymer, but I would have liked to see that made in aluminum instead. Of course this keeps the cost down. Still, very durable and only a minor gripe. Also, I would have liked to see the ejection port actually functional as it is on Crosman's DPMS. Again, only a minor gripe that doesn't affect your experience.

Don't forget your eye protection, the bb's will be flying with this one folks! Great fun!

Well built. Look just like the real firearm. Fun to plink with. Is a blow back design.

CO2 cartridge barely last for one mag full, wish they had made the mag for two CO2 cartridges', Some type of Allen key system to puncture CO2. I could not get the CO2 to puncture with fingers alone, needed a wrench.

Be careful. Mag release will drop the mag on the floor. When using 3 round fire, it will first shoot one bb semi and then 3 bbs. Mine did not come with an owner's manual, but easy to download from Sig website. The bolt dust cover does not open,