Date: 23/6/2024 21:26


SIG Sauer MCX Rattler CO2 BB Rifle

Main Product Rating 3.53.5 (10 reviews)
SIG Sauer MCX Rattler CO2 BB Rifle

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Item details
SIG-AIR-RATTLER-BB [PY-5313-11733]

SIG Sauer MCX Rattler CO2 BB Rifle

Sold & shipped by Pyramyd AIR

SIG Sauer MCX Rattler Price


Caliber.177 (4.5mm)
Max Velocity300 fps

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The SIG Sauer MCX Rattler CO2 BB Rifle has many similarities to the successful short-barreled rifle firearm line that inspired it. It reaches velocities up to 300 FPS for excellent performance for target practice or plinking.

This BB rifle features a minimalist folding stock that is reminiscent of the one from its powder-burning counterpart, making it easy to transport and store due to its compact size with the stock folded. The pistol grip uses a combination of texturing on the sides and ridges on the front and rear that makes it nearly identical to the grip used on the firearm version.

The SIG MCX Rattler utilizes a drop free magazine with a capacity of 30 BBs to provide extended shooting time, and the selector switch goes from safe, to semi-auto, to 3-round burst to deliver an exciting experience without wasting ammo. This BB gun uses a 12-gram CO2 cartridge for power and has ambidextrous controls to accommodate both left-handed and right-handed shooters.

The long Picatinny optics rail for this air gun holds both the included flip-up front sight and the flip-up rear sight to enable accurate shots out of the box, as well as allowing shooters to add a scope or dot sight. In addition, the handguard offers M-LOK T-slots that help to securely and easily attach accessories such as lasers and lights.

To get an airgun that takes its design cues from the renowned family of SBR firearms, buy a SIG Sauer MCX Rattler CO2 BB Rifle from Pyramyd AIR now.

Tech Tip: The safety can only be engaged when the rifle is cocked, like the real steel version. Attempting to force the safety "on" without the rifle being cocked may damage the airgun. 

SIG Sauer MCX Rattler CO2 BB Rifle

  • CO2 power
  • .177 caliber (4.5mm) BBs
  • Semi-automatic and 3-round burst modes
  • 30-round drop free magazine
  • Ambidextrous controls
  • Textured pistol grip
  • Flip-up front and rear sights
  • Long Picatinny optics rail
  • M-LOK handguard
  • Minimalist folding stock
  • Field strips like the firearm
  • Max. velocity: 300 FPS
  • Uses one 12-gram CO2 cartridge
  • Weight: 4.6 lbs. (with magazine)
  • Barrel length: 5.5"
  • Overall length: 23.63"

See other products by SIG Sauer

See manual
Item details
SIG-AIR-RATTLER-BB [PY-5313-11733]

SIG Sauer MCX Rattler CO2 BB Rifle

Sold & shipped by Pyramyd AIR

SIG Sauer MCX Rattler Price


Caliber.177 (4.5mm)
Max Velocity300 fps

SIG Sauer MCX Rattler Specs

Max Velocity300 fps
Overall Length23.63"
Weight4.6 lbs
Suggested forPlinking/Fun
Caliber.177 (4.5mm)
Barrel Length5.5"
Shot Capacity30
BarrelSmooth bore
Front SightFlip-up, adjustable
Rear SightFlip-up, adjustable
ActionBurst fire
Max Shots per Fill60
Body TypeRifle
Fixed/adj. powerFixed

SIG Sauer MCX Rattler Reviews

Rating 3.53.5 (10 reviews)
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Rating 1.01.0 1.0

Rating 1.01.0 1.0

Rating 1.01.0 1.0

Verified Purchase

Things I liked:


Things I would have changed:

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.

What others should know:

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!

Rating 4.04.0 4.0

Very good!

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.

Rating 5.05.0 5.0


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

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  • Tito from Chile asked:

    Is the length in the specifications with the stock extended or folded?

    • Ry from USA asked:

      Is this the same folding brace found on Sig’s real guns ? Will I be able to take off and attach it to a real sig gun?

      • Lenny from USA asked:

        Does the Rattler have real QD mounts?

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