THE TCS® ALUMINUM +4 RED COLOR MAGAZINE EXTENSION IS DESIGNED FOR YOU TO CARRY MORE ROUNDS IN YOUR MAGAZINE FOR EDC OR FIELD ACTIVITIES. THIS TCS® MAGAZINE EXTENSION HAS BEEN RIGOURSLY TESTED TO SUPPORT YOU EVEN IN THE MOST CHALLENGING CONDITIONS. THIS EXTENSION ALSO ADDS A SMALL AMOUNT OF WEIGHT TO THE MAGAZINE, HELPING THE EMPTY MAGAZINE DROP FREE WITH EASE FOR FASTER RELOADS. THE USER FRIENDLY DESIGN ALLOWS FOR EASY DISASSEMBLY AND INSTALLATION.