SIG Sauer MCX Spear-LT IR SBR Features Chambered in 5.56 NATO the MCX Spear-LT IR SBR runs on an 11.5 chrome-lined cold hammer forged barrel with a 1-in-7 rate of twist for consistent accuracy across standard 5.56 loads. The semi-auto action cycles reliably shot to shot and the SIG hybrid compensator/flash hider manages recoil and muzzle signature together though it is not Loctited at the factory and should be checked for tightness before firing. The SIG flatblade match trigger gives shooters a clean repeatable break under pressure. For competitive shooters and professionals who need dependable mid-length accuracy the MCX Spear-LT IR SBR delivers. The Gen II NiR FDE Cerakote finish was developed to reduce infrared signature under night vision giving this short barreled rifle a real advantage in low-light and night operations where standard finishes reflect too much light. Built on an alloy frame and weighing 6.13 lbs. with magazine inserted the Spear-LT IR SBR stays manageable in hand while fully ambidextrous controls keep every function reachable for right and left handed shooters alike. The SIG folding/telescoping stock collapses the rifle from 30.9 extended to 28.6 collapsed and 22.25 folded for compact storage or transport and it accepts the full lineup of MCX LT barrels and handguards for quick configuration changes. For hunters and professionals who need a low-signature platform for night operations the reduced IR Cerakote finish makes the difference. The Spear-LT IR SBR shares its barrel and handguard system with the rest of the MCX LT lineup so shooters can reconfigure the platform without starting over on a new host. It ships with one 30 round phosphate magazine and carries SIG Sauer's proven MCX architecture into a compact short barreled rifle configuration. For self-defense training and tactical use where low visibility matters the SIG Sauer MCX Spear-LT IR SBR is for sale at GrabAGun. SIG Sauer MCX Spear-LT IR SBR Specifications Manufacturer: SIG Sauer Model: MCX Spear-LT IR SBR Family: MCX Series Type: Short Barreled Rifle Item Group: Short Barrel Rifles Action: Semi-Auto Caliber: 5.56 NATO Capacity: 30 Rounds Included Magazines: 1 30rd Phosphate Magazine Barrel Length: 11.5 Barrel Material: Cold Hammer Forged Steel Barrel Finish: Chrome Lined Rate of Twist: 1-in-7 Overall Length: 30.9 Extended 28.6 Collapsed 22.25 Folded Overall Height: 7.5 Overall Width: 2.9 Stock/Grips: SIG Folding/Telescoping Stock Finish: Gen II NiR FDE Cerakote Material: Alloy Frame Weight: 6.13 lbs. with Magazine Controls: Fully Ambidextrous Controls Trigger: SIG Flatblade Match Trigger Muzzle Device: SIG Hybrid Compensator/Flash Hider Not Loctited Check Tightness Before Firing Compatibility: Interchangeable with All MCX LT Barrels and Handguards Available At: GrabAGun