The SIG Sauer MCX-Spear-LT Pistol (part no. WPMCX-556N-9B-LT) is a first-responder-exclusive AR platform built on the legacy of the MCX Virtus, chambered in 5.56 NATO. SIG Sauer designed the MCX platform through extensive testing and continuous innovation, and the Spear-LT variant carries that development forward in a lighter-weight configuration. This particular SKU is restricted to verified first responder purchase and is not available to the general public.

Key Specifications

• Chambered in 5.56 NATO on the proven MCX platform.
• Built as the MCX-Spear-LT, a lighter-weight evolution of the MCX Virtus.
• Sold exclusively through a first responder purchase program, restricted to verified eligible buyers.
• Runs a short-stroke gas-piston system rather than direct impingement.
• Uses a buffer-tube-less, push-button folding stock for a compact stored profile.

Frequently Asked Questions

Can any customer buy this pistol? No, this SKU is restricted to verified first responder purchasers.

What caliber is the MCX-Spear-LT chambered in? 5.56 NATO.

What platform is it built on? SIG Sauer’s MCX platform, evolved from the MCX Virtus.

Buy the SIG Sauer MCX-Spear-LT Pistol (First Responder Exclusive)

This SIG Sauer MCX-Spear-LT is offered through a restricted first responder purchase program within our AR pistols selection. Contact our Lubbock, Texas gun shop to verify eligibility before ordering.