Home Depot has Ryobi ONE+ 18V Cordless 10-Oz Caulk & Adhesive Gun (Tool Only), model no. PCL901B, for $49.97 (regularly $84) with Free Shipping for a limited time.

This cordless caulk and adhesive gun is made for 10oz cartridges and offers up to to 500lb push force to handle some of the thickest sealants. It has a variable speed dial for precise bead control and its anti-drip technology reduces mess. It work with any RYOBI ONE+ 18V battery and comes with a 3 year limited warranty.