25 Degree taper mount. Never fired. Removed from an MCX Spear LT for different muzzle device. There are some tool marks from when I removed it, but otherwise is in like-new condition. And just an FYI for anyone working on a spear barrel, I highly recommend buying their MCX barrel support tool. Definitely worth the money. *****Shoulder Interface: 25-degree taper for use with SIG SAUER Taper-Lok barrels.***** For any questions regarding specs, please see SIG's website for SKU: 8101149-R Price includes shipping with tracking.
