MCX-SPEAR LT 9" UPPER 300BLK FDE
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$1,524.87
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Jun 25, 2026
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Adapts with Any M4/AR15 Spec Lower Assembly
Adjustable Gas System
Ambidextrous Charging Handle with Gas Deflector
Compatible with SLX/SLH Suppressors
Dual Rod Recoil Assembly Eliminates Buffer System
M4 Adapter Allows for Picatinny Rail Folding Stock Capabilities
Quick Change Barrel Design
Tapered Bolt Design
Specifications
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 UAMCX-300B-9B-LT-IR
