Out of stock $546.00 Sig Caliber Exchange Kit, Upper, 300 Blackout, 6.75", Black, Tapered Lug, Fits Sig MCX CALX-MCX-6B-300-TAP
Out of stock $558.00 Sig 300 Blackout, 16", Black, Caliber X-Change Kit, Sig MCX SGCALX-MCX-16B-300-TAP
Out of stock $570.00 Sig Caliber X-Change Kit, 9MM, 4.6" Threaded Barrel, Black, 17Rd, 320 Carry Tacops, CALX-320CA-9-TACOPS-TB
Out of stock $1,640.00 SIG MCX Rattler Upper, 300 Blackout, 5.5" Barrel, M-Lok Handguard, Black Finish UAMCX-5B-300-BLK-TAP
