Sig Sauer MCX Rattler Upper .300BLK 5.5"

Regular Price: $1,799.00
Our Price: $1,699.00
UPC: 798681587735
In stock
as of 06/15/2019 10:36PM CST

Store Inventory
Available Online2
Fountain Valley, CAOut of stock
Plano, TX2

All NFA rules apply to barrels less than 16" in length.

Inter-Store Transfer

If this item is out of stock at your local RifleGear but available at our other location, no problem. Just place your order and select In-Store Pickup as the shipping method. As long as the item is legal in your location, we will transfer the item for you. You will be notified when your item arrives.

Sig Sauer MCX PDW Rattler upper assembly. The Rattler offers a discrete and compact package with its 5.5" barrel and short overall length. The adjustable gas piston offers adjustability for suppressed use.
Complete with upper assembly, AR lower adapter, stock adapter and match duo kit. The AR adapter allows the use of the Rattler/MCX upper on a standard AR lower receiver(NFA Rules Apply). The use of the supplied trigger kit is recommended, aftermarket triggers may cause malfunctions.


Complete SIG Rattler Upper Receiver, Folding Sights
Side Folding Stock Adapter
AR/M4 Lower Adapter
SIG Duo Trigger Kit
SIG QD Socket Kit
SIG Taper-Lok Adapter Washer
Caliber .300 Black Out
Barrel Length 5.5"
Twist 1:5"
Operating System Gas Piston, 2 Position Adjustable
Handguard MLOK
Sights Flip Up
Muzzle SIG Taper-Lok Flash Hider

All NFA rules apply to barrels less than 16" in length.

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