SIG Sauer MCX Rattler BB CO2 Rifle

Type: BB Airsoft Rifle.
Manufacturer: Sig Sauer.
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).
Ammunition Type: 4.5mm steel BBs.
Ammunition Capacity: 30 rounds spring fed.
Velocity: Claimed of 325 fps.

Buy the compatible magazine.
Buy Co2 50-Pack: NSS1000-0004.
Buy Co2 5-Pack: NSS1000-0001.

Trigger Pull: 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: On with the show… First we shot five rounds through our Chronograph using a brand new CO2 in what we would consider to be room temperaterer (20C or 70F). Sig Sauer claims their MCX Rattler shoots around 325 fps and in our testing we got a five shot average of 318 with our slowest shot hitting 298 and our fastest shot hitting 346. So we would say Sig is right on the mark here. We then setup a fresh pepper target 30 feet away and loaded up a full magazine (30 rounds) for our accuracy test where we first shot in 10 rounds in semi auto and then the remaining 20 rounds in three round burst. We would say we were able to get around a 2 inch grouping in semi auto but we did have to shoot aiming on the bottom of the rings and we were 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 we switched the selector to three round burst, our grouping really did not change all that much, maybe 3 inches at most and that was with 20 rounds.

Build Quality: 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 we 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. We 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 we are not sure but maybe even the bolt release, we will know more when we 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. We do like that both the Umarex Steel Storm and Steel Force use dual 12 gram CO2 cartridges which we 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. Our 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 we will put our recommendations on hold until I actually test it out!