The SIG MCX Spear LT IR is engineered for accurate 5.56 NATO performance through a 16″ barrel and tuned short-stroke gas system. Its balanced mass distribution and consistent bolt travel support precision shot placement across sustained firing cycles.
The monolithic upper and free-floating handguard maintain reliable alignment under thermal and mechanical load, preserving point-of-impact consistency. The internal gas regulation and carrier geometry provide enhanced cycling control with reduced impulse variance.
Its lightweight aluminum construction promotes lightweight handling while maintaining structural rigidity at the barrel and trunnion interface. The threaded muzzle interface supports suppressed configurations when legally configured, extending operational flexibility without compromising system stability.
Key Features:
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MCX Spear LT IR configuration
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5.56 NATO chambering
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16″ barrel length
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Short-stroke gas piston system
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Free-floating M-LOK handguard
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Monolithic upper receiver
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Folding and telescoping stock interface
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Ambidextrous controls
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Threaded muzzle
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Full-length top Picatinny rail
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AR-pattern magazine compatibility
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30-round magazine capacity
Manufacturer Specifications:
Finish: Black
Caliber: 5.56 NATO
Barrel Length: 16″
Chamber: 5.56 NATO
Capacity: 30+1
Part Number: RMCX556N16BIR
Operating System: Short-stroke gas piston
Receiver: Monolithic aluminum
Handguard: Free-floating M-LOK
Muzzle: Threaded
Origin: Manufacturer listed production
FAQ:
Q: What operating system does the MCX Spear LT IR use?
A: It uses a short-stroke gas piston system for regulated cycling.
Q: Is the barrel free-floating?
A: Yes, the handguard is free-floating to maintain barrel consistency.
Q: What magazines are compatible with this rifle?
A: It accepts standard AR-pattern 5.56 NATO magazines.
Q: Is the muzzle threaded from the factory?
A: Yes, the rifle includes a factory threaded muzzle.
Brought to you by Black Bayou Armory.
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