Sig Sauer MCX Spear-LT Pistol


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Cartridge 300 AAC Blackout (7.62x35mm)
Action Type Semi-Automatic
Capacity 30 Round
Magazine Quantity 1
Weight 5.6 Ounce
Height 7.5 Inches
Width 2.9 Inches
Overall Length 18.8 Inches
Barrel Length 9 Inches
Barrel Material Carbon Steel
Barrel Finish Black Nitride
Threaded Muzzle Yes
Threads 5/8″-24
Compensated Yes
Front Sight None
Rear Sight None
Frame Material Alloy
Frame Finish Coyote
Grip Material Polymer
Grip Style Stippled
Country of Origin United States of America
Safety Ambidextrous Switch

The MCX platform has long been SIG SAUER’S breeding ground for developing the best rifle system in the world through extensive testing, continued innovation and customer feedback. SIG SAUER introduces the MCX-SPEAR LT, based on its predecessor the MCX Virtus the MCX-SPEAR LT has a lightened handguard with attachment screws for additional rigidity and a lightened profile barrel with improved accuracy.  Other features of the MCX-SPEAR LT include an ambidextrous bolt catch and release on its lower, coyote anodized finish, minimalist stock for maximum compact foldability and AR15 style trigger compatibility. The MCX-SPEAR LT, has once again set the bar for modular weapons technology.


  • Lightweight Ergonomic Handguard
  • SIG Flatblade Match Trigger
  • Fully Ambidextrous Controls
  • Interchangeable Barrels
  • SIG QD Suppressor-Ready Flash Hider


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