Sig MCX Rattler Upper conversion kit 300blk. for sale in Fort Worth Texas

$1,700.00

Sig MCX Rattler upper / conversion kit for use with a standard AR lower.

Includes:
-Sig mcx rattler upper 300blk
- Forward controls keymo muzzle device 5/8x24
- Sig pistol brace
- Conversion pieces that attach to standard lower receiver
- Two Lancer 300blk specific magazines
- Sig trigger and trigger assembly needed to function in standard AR lowers.

Note: Will NOT work with a LMT Mars L lower due to how the ambi controls function.

All other lowers and ambi lowers (such as radian) are good to go.

This upper has less than 50 rounds on it. I just don’t have a use for it currently. Functions great, like new. Still have original box.