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Mag Type AR-15
Barrel Length 5.5 in (140 mm)
Caliber 300 Blk
Height 8 in (203 mm)
Overall Length 29.25 in [743 mm]
Overall Width 2.8 in [71 mm]
Weight 6.5 lb (29 kg)
Operating System Gas Piston


Is the sig MCX Rattler Canebrake Worth it?

The Sig MCX rattler canebrake is still a great weapon when firing supersonic ammo. It is small and can be hidden in any standard backpack. It packs a punch with a 30-round journal that can hit a couple of hundred yards. Also, it looks really cool.

Does the MCX Rattler Canebrake come with a suppressor?

The MCX Rattler Canebrake comes as a suppressor-ready platform with an SD forend and an inert training device that mimics the size and significance of the SIGSRD762 suppressor and ensures that all of the muzzle flashes pass through the shooter’s hand when reaching the forend during operation. Without a functional suppressor installed

What is Unique About the SIG MCX?

The MCX features a system that allows conversion between 5.56×45mm NATO. 300 AAC Blackout and 7.62×39mm ammunition, using standard 5.56mm STANAG magazines for 5.56×45mm and . 300 AAC Blackout and STANAG compatible magazines specially designed for 7.62×39mm.

Do I Need a Tax Stamp for an MCX Rattle?

The Rattler PCB is probably the world’s smallest production rifle caliber pistol and is chambered in. 300BLK or 5.56mm. It is also available as a Short Barrel Rifle (SBR) with SIG’s standard skeletonized aluminum side-folding stock. The gun requires BATF registration and a $200 revenue stamp in this configuration.

Can you Have a SIG MCX?

This is the commercial version of the 6.8x51mm hybrid round SIG Sauer developed for the NGSW. The MCX Spear is marketed as a novelty for civilian buyers. “This is a unique opportunity for passionate consumers to own a piece of history,” SIG Sauer President and CEO Ron Cohen said in a company news release.

Is the SIG MCX Replacing the M4?

“They are lightweight, fire more lethal rounds, mitigate recoil, provide better muzzle performance, and include integrated muzzle sound and flash reduction.” The SIG Sauer MCX Spear (XM5) has been selected to replace the M4 used by Army infantry squads.


Mag Type AR-15
Barrel Length 5.5 in (140 mm)
Caliber 300 Blk
Height 8.0 in [203 mm]
Overall Length 23.5 in [597 mm]
Overall Width 2.8 in [71 mm]
Twist Rate 1:5
Weight 5.7 lbs (2.59 kg)
Operating System Gas Piston




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