Bore Tech Bore Guide for AR-15 300 Blackout

"Bore Tech's AR-15/AR-10 Bore Guides precisely align cleaning rods with the rifle bore and prevent damage to both the firearm and cleaning rod making it a necessary tool for proper cleaning and protection of your firearms. The Bore Tech AR Bore Guides are CNC machined from a rugged, solvent resistant, synthetic polymer that perfectly aligns cleaning rods with the bore and prevents cleaning rods from dragging on the locking lugs and chamber edges. This eliminates scratching of your cleaning rod a