Midwest Industries Stock Wrench Features The Midwest Industries Stock Wrench is engineered specifically to engage AR-15 castle nuts giving builders and armorers positive secure contact during removal and installation. The dedicated design makes quick work of swapping stocks or replacing receiver extensions tasks that can otherwise require improvised tools and risk damaging the castle nut or buffer tube. A dual-function design supports both stock installation and receiver extension service making it a versatile addition to any AR-platform maintenance kit. Constructed from durable steel and finished in black the wrench is built to withstand repeated use in a shop or armorer s environment. An integrated 1/2 inch drive interface allows the wrench to accept a standard torque wrench enabling consistent repeatable torque application when tightening castle nuts to proper specification. This feature helps ensure a secure professional-quality assembly rather than relying on feel alone reducing the chance of a loose or overtightened castle nut. Measuring 10.85 inches long 5.05 inches wide and 1.2 inches high the wrench is compact enough to store easily while still providing solid leverage. Made in the USA the Midwest Industries Stock Wrench delivers the strength and reliability AR builders and armorers need for dependable stock and receiver extension service. Midwest Industries Stock Wrench Specifications Manufacturer: Midwest Industries Model: Stock Wrench Type: Tool Color: Black Material: Steel Compatible Hosts: AR-15 Length: 10.85 Width: 5.05 Height: 1.20 Drive Interface: 1/2 Available At: GrabAGun