Get this high quality MCX Rattler Upper from GrabAGun today for the cheapest price online! You won’t want a bad upper receiver for your next AR build, so don’t compromise and go with this great one from Sig Sauer!
<p>MCX Rattler Upper Features Sig Sauer, SIG MCX Rattler Upper, 300 Blackout, 5.5″ Barrel, M-Lok Handguard, Black Finish MCX Rattler Upper Specifications UPC Code: 798681587735 Manufacturer: Sig Sauer Manufacturer Part #: UAMCX-5B-300-BLK-TAP Model: Upper Type: Upper Caliber: 300 Blackout Barrel Length: 5.5″ Finish/Color: Black Description: MCX Upper Fit: SIG MCX Subcategory: Upper Receivers</p>
