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Sig Sauer MCX Rattler AR15 Conversion Kit - 5.5" 5.56mm NATO

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Sig Sauer MCX Rattler AR15 Conversion Kit - 5.5" 5.56mm NATO

Details

This is a new OEM Sig Sauer MCX Conversion Kit that includes an MCX upper receiver, adapters to convert a standard Mil-Spec AR15 lower receiver to accept the MCX upper receiver, and a Sig Sauer two-stage trigger. The trigger installation is required to ensure proper operation of the MCX upper receiver. Using your existing trigger is not recommended and may lead to malfunction.

Sig's MCX conversion upper receivers include the necessary parts to install on an existing AR lower. That means you can essentially build your own pistol or SBR or convert an existing lower into a Rattler.

The kit includes the complete upper with 5.5" 5.56mm barrel, bolt carrier group, buffer tube eliminator / 1913 back (for mounting a brace or stock), 1913 side folding adapter (for mounting a buffer tube for brace or stock), and Sig's Match Duo 2 stage trigger.

The Rattler has a two position gas valve for running suppressed and unsuppressed.



Note: All NFA rules apply.

Additional Information

SKU UAMCX-5B-556-BLK-TAP
Caliber .300 Blackout
Manufacturer Sig Sauer
Frame Finish Black
Barrel Length (in) 5.5 in
Accessory Rail Yes
Warranty Warranty provided by Sig Sauer. Warranty information is available for Sig Sauer products at https://www.sigsauer.com/support/warranty/.

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