Sig Sauer MCX Spear-LT IR | 5.56 NATO | 11.5in | PMCX-556N-11B-IR

The Sig Sauer MCX Spear-LT IR is a compact, optics-ready 5.56 NATO AR-style pistol built around a gas-piston operating system and an 11.5 inch cold hammer-forged barrel. It ships with a folding pistol brace, a 30-round polymer magazine, and Gen II NiR FDE Cerakote intended to reduce IR signature and increase surface durability. This configuration suits range training and practical shooting applications. A Trijicon MRO red dot is a suitable optic option under $1,000 that pairs well with the MCX Spear-LT IR for fast target acquisition and durability.

Product Specifications

• The manufacturer part number is PMCX-556N-11B-IR.
• The caliber is .223 Rem / 5.56 NATO.
• The barrel length is 11.5 inches.
• The barrel material is cold hammer-forged carbon steel.
• The twist rate is 1:7.
• The barrel threads are 1/2-28 tpi.
• The action type is Semi-Auto.
• The operating system is gas piston.
• The stock type is folding pistol brace with push-button hinge.
• The package includes 1 x 30-round polymer magazine.
• The magazine capacity is 30 rounds.
• The receiver finish is Gen II NiR FDE Cerakote.
• The overall length is 29.75 inches.
• The weight is 6.68 lb with magazine.
• The UPC is 798681699643.

The MCX Spear-LT IR combines a compact profile and modern features for shooters who want a durable, serviceable AR-platform pistol with ambidextrous controls and an adjustable gas system. The Gen II NiR Cerakote finish and folding brace make it a practical choice for those who need a transportable, optics-ready firearm for range work and competitive/practical shooting.

Owners commonly note the durable Cerakote finish and the reliable gas-piston operation as positive attributes of this model.

Related Videos: