Guns Modify TM MWS GBBR EVO High Speed Complete Bolt Set V2

Durable Alloy construction Better reliability and durability For TM-based MWS M4 systems If you want your MWS-based GBBR M4 to perform more consistently than ever imagined, you need this! The Guns Modify EVO V2 Complete Bolt Carrier Set is constructed from a durable alloy and provides superior reliability and durability over your stock bolt carrier. It comes with a pre-installed 3.5 nozzle for consistent, easy feeding and is a simple drop-in design, requiring minimal modification. This bolt carrier is designed for high-speed GBBR builds, but it still makes a great upgrade over your stock carrier even if you're not a speed demon!