Description
- Sig Sauer MCX-Spear LT
- Complete Upper Receiver
- 300 Blackout
- 9" Threaded Barrel
- 5/8X24 Thread Pitch
- Fits AR-15 Lower Receivers
- Anodized Finish
- Flat Dark Earth
- Includes Charging Handle and Bolt Carrier Group
- 3-Prong/SIG Suppressor QD Muzzle Device


































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