This listing is a SIG Sauer MCX CAL-X conversion kit in 7.62x39 with an 11.5-inch barrel. While more than one barrel length is offered, this listing is for this 7.62x39 11.5-inch kit only. It is a conversion kit, not a complete rifle.

The kit is built for the MCX SPEAR LT. It includes an 11.5-inch 7.62x39 barrel and gas-block assembly, a 7.62x39 bolt, and a heavy hammer spring. Published twist is 1:9.5. The barrel is hammer-forged with a medium profile.

This listing is the SIG Sauer MCX CAL-X 7.62x39 11.5-inch conversion kit only.

• Manufacturer: SIG Sauer — MCX CAL-X kit 7.62x39 11.5 in, SKU WCALX-MCX-762R-11B-LT, UPC 798681683567
• Cartridge: 7.62x39
• Barrel: 11.5 in; 1:9.5 twist; bolt and heavy hammer spring included
• What this is: conversion kit, not a complete rifle
• This listing: this 7.62x39 11.5 in CAL-X kit only
• This item is restricted to LE / MIL / first responders only.