On with the show… First I shot five rounds through my Chronograph using a brand new CO2 in what I would consider to be room temperaterer (20C or 70F). Sig Sauer claims their MCX Rattler shoots around 325 fps and in my testing I got a five shot average of 318 with my slowest shot hitting 298 and my fastest shot hitting 346. So I would say Sig is right on the mark here.
I then setup a fresh pepper target 30 feet away and loaded up a full magazine (30 rounds) for my accuracy test where I first shot in 10 rounds in semi auto and then the remaining 20 rounds in three round burst. I would say I was able to get around a 2 inch grouping in semi auto but I did have to shoot aiming on the bottom of the rings and I was using the flattened sights rather than the pop up sights as you have two options with the Sig Sauer MCX Rattler CO2 BB Rifle. Once I switched the selector to three round burst, my grouping really did not change all that much, maybe 3 inches at most and that was with 20 rounds.
The Sig Sauer MCX Rattler CO2 BB Rifle is a lot of fun, it is by far not the most powerful blowback full auto-ish Blowback BB Rifle out there but it performs decent and looks really good. The internal blowback action does give you a slight tapping feel and it does allow for a true single action trigger. If you want a rather compact Blowback BB Rifle with Sig licensing and branding along with Sig quality then take a look at the Sig Sauer MCX Rattler CO2 BB Rifle. Did I mention it was really affordable too?
Type: BB Rifle. Manufacturer: Sig Sauer ASP Model: Sig Sauer MCX Rattler Materials: Metal and Nylon Fiber build. Weight: 4.6 Pounds (2.1 kg). Barrel: 7 inch (17.8 cm) steel non-rifled. Propulsion: Single 12 gram CO2. Action: Semi auto and 3 round burst with internal blowback (single action only trigger). AmmunitionType: 4.5mm Steel BB’s. AmmunitionCapacity: 30 rounds spring fed. Velocity: Claimed of 325 fps.
TriggerPull: The trigger pull on the Sig Sauer MCX Rattler CO2 BB Rifle is a single action only trigger that requires initial activation of the charging handle, after the first shot the internal blowback action will do this automatically for each followup shot. The single action only trigger is fairly short with a light pull and predictable release, great for action shooting. You also have the option of shooting in true semi auto (one trigger pull and one shot) or selecting 3 round burst mode which allows for one pull of the trigger with 3 rounds in full auto.
Accuracy: I really don’t have much feedback to give here as I have only shot a single magazine so far with the Sig Sauer MCX Rattler CO2 BB Rifle in a very uncontrolled format as I was not so much testing it out but rather just having some initial fun to see what it was all about. I will of course be following up this Table Top Review with a Field Test Review shortly to find out what the actual velocity is and see how accurate it is in both semi auto and 3 round burst mode.
BuildQuality: The build quality for the Sig Sauer MCX Rattler CO2 BB Rifle is really good considering it is mostly all plastic on the outside. It does feel solid and well built when holding it in the hand. From what I can tell the metal parts would include the barrel, the charging handle, the main controls and also much of the internal components inside both the rifle and the magazine. I would have liked to have seen a metal flash hider and perhaps the pop-up Iron sights could have also been metal.
Realism: The Sig Sauer MCX Rattler CO2 BB Rifle is a 1 to 1 scale very realistic Replica of the real steel Sig Sauer Rattler normally chambered in 5.56 NATO. It would have been nice if the dust cover opened up when charging the Airgun for realism but most of the other controls work as expected, like the charging handle, selector switch, magazine release and I am not sure but maybe even the bolt release, I will know more when I make my Field Test Shooting video for the Sig Sauer MCX Rattler.
Pros:
Perfect size and weight for a fun BB semi / full auto shooter.
Fully adjustable pop up sights that are usable in both the down and up position,
Lots of accessory mounting options with the picatinny top rail and MLOCK in the sides and bottom.
Folding rear stock allows for a compact size and much easier transportation.
Ambidextrous selector switch.
Can shoot in both semi and 3 round burst modes.
Very solid AR15 type magazine that holds the 30 4.5mm steel BB’s and the single 12 gram CO2.
Reasonably priced at around $250 at the time of this video.
Sig Sauer licensing.
Cons:
Only uses a single CO2, two would have been better in a fast action shooter like this to maintain fps.
325 fps seems a bit low.
Lots of plastic but build quality does feel good.
Comments:
The Sig Sig Sauer MCX Rattler CO2 BB Rifle reminds me a lot of the Umarex Steel Storm and Steel Force which are both Compact AR type Semi and Burt mode 4.5mm CO2 Blowback Airguns. Where the Sig Sauer MCX Rattler CO2 BB Rifle shines, is in the quality and realism as compared the Umarex counterparts. I do like that both the Umarex Steel Storm and Steel Force use dual 12 gram CO2 cartridges which I feel allows them to have more consistent velocity and performance as compared to the single CO2 in the Sig Sauer MCX Rattler CO2 BB Rifle. My First impressions without really testing the Sig Sauer MCX Rattler are all pretty positive but it will really come down to how well it performs and so I will put my recommendations on hold until I actually test it out!
My Table Top Review of the Sig Sauer MCX Rattler CO2 BB Rifle:
I love making these Mystery Box Unboxing Videos as many of the items inside are actually real mysteries to me, some I may have an idea of but even these items are new to me so it’s fun to open them up and check them all out. In this October 2023 Mystery Box Video I checkout 9 items ranging from AEG Airsoft Rifles to Airsoft , BB and Pellet Pistols. There is even a new Steel BB product from Sig Sauer that is a compact rifle with a 3 round burst option when shooting.
This Table Top Comparison video is also a bit of a revisit since I reviewed the US version of the Sig Sauer ASP MPX .177 Cal. Pellet Rifle back in 2016 when it first came out. I actually had to go across the border and bring it back across with me which can be a lot of fun dealing with Canada Customs border agents. They are well meaning but often don’t fully understand their own import guidelines for Airguns. After about an hour or so I was able to convict the CBSA officer that no my Sig Sauer Airguns where not regulated Firearms and no they did not require any registration or transfer permits.
Anyway that was 5 years ago and now we have the Canada import version which makes purchasing one of the Sig Sauer ASP MPX .177 Cal. Pellet Rifles so much easier and to be honest there really isn’t any difference as far as I can tell since my original US version even though it had a claimed fps of up to 600 was actually closer to somewhere in the mid 400’s using standard .177 caliber lead pellets.
Below are the basic specifications and if you want more info than that either watch the video or checkout my Original Table Top Review for the Sig Sauer ASP MPX .177 Cal. Pellet Rifle since both the original US and newer Canada versions are virtually identical…
Type: Pellet Rifle. Manufacturer: Sig Sauer ASP Model: Sig Sauer MPX ASP Materials: Metal and Nylon Fiber build. Weight: 7 Pounds (3300 Grams). Barrel: 8 inch steelrifled. Propulsion: 88 or 90 Gram CO2. Action: Semi Auto,double action only. Ammunition Type: .177 caliber pellets. Ammunition Capacity: 30 rounds belt fed. FPS: Up to 575-600 fps (When shot by a Unicorn) Probably closer to around 450fps
I will be following this Tabel Top Review for the US and Canada Sig Sauer ASP MPX .177 Cal. Pellet Rifles with a Field Test Shooting Comparison to see if anything has really changed interns of velocity and accuracy so stay posted for that video coming out very soon…
Starting with my Chronograph velocity testing for the Sig Sauer MCX ASP .177 Caliber CO2 Pellet Rifle, I used a brand new Sig branded 90 gram CO2 cartridge along with 6.9 grain RWS pellets. The temperature was 24 degrees Celsius (75 degrees Fahrenheit) in the Sea Can Indoor Airgun Shooting Range. Sig claims the Sig Sauer MCX ASP .177 Caliber CO2 Pellet Rifle to shoot up to 5.7 Joules. My Chrono testing resulted in an average fps of 418 with the 6.9 grain lead pellets which yielded a 3.7 Joule (2.7 foot pound) power output. I was not expecting 5.7 joules as that would have been closer to 600 fps using 6.9 grain pellets.
Next I setup a fresh paper target 30 feet down range and using seated and rested shooting position I placed 10 rounds into the target. The Sig Sauer MCX ASP .177 Caliber CO2 Pellet Rifle shot a decent 1.5 inch 10 round grouping but I am pretty sure I can get better results once I find the right pellet, I have found this especially to be true with Sig Air Rifles. My MCX Virtus was able to get 1/2 inch groupings at 50 feet once I found ammo it liked and my MPX also shot a bit tighter form 30 feet out with a different ammo selection. I then unload the remaining 15 rounds in to the target rapid fire, followed by another 30 round full magazine and the grouping only stretched out a little bit, closer to 2 inches. Shots placed on the target a little bit low and to the right but this can be easily corrected for consistent bullseyes using the fully adjustable sights.
The Sig Sauer MCX ASP .177 Caliber CO2 Pellet Rifle performed well for me in general, I did find that occasionally the belt did not index resulting in a misfire (no pellet fired) but the next pull of the trigger would index the belt resulting in a pellet firing, there where no jams and all rounds from the belt where fired. I am not sure why this happened as this did not happen to me with my other Sig Sauer Air Rifles. Perhaps I short triggered it a bit not getting a full belt index. I know many of you have been waiting for a Canadian version of the Sig Sauer MCX ASP .177 Caliber CO2 Pellet Rifle, now that we have them in the All Black Iron Sight Version and FDE Red Dot Version, make sure to get one as once we run out I am pretty sure we will no longer be able to get these Canada Import Legal Sig Sauer MCX ASP .177 Caliber CO2 Pellet Rifles.
In this 2016 SHOT Show Interview I talk with Dani Navickas from the Airgun division of Sig Sauer. Dani and I discuss Sig's new line of CO2 Blowback Pellet rifles and pistols. Dani talks about some of the behind the scenes information that went into the development and manufacturing of Sig's new line of CO2 Airguns.
Sig CO2 P226 and P250 Air Pistols along with their Sig MPX and MCX Air Rifles have been developed in house by Sig.Sig has been working very closely with a Japanese manufacturer to make sure that every stage of development is to Sig's high standards. The new Sig CO2 Blowback rifles and pistols are made to match the real steal version in almost every way including dimension, weight, functionality, materials used and even trigger pull.
Sig's new Sig MPX and Sig MCX Pellet Rifles have a brand new patented belt fed 30 round pellet magazine that is indexed via the internal blowback action of these rifles smoothing out the trigger action. The Sig P226 and Sig P250 pistols use a double ended 16 round pellet magazine similar to what you would find on Umarex's PX4 Strom blowback pellet pistol.
Look for Sig's new line of CO2 Blowback Pellet Airguns coming out shortly.
