Jason, the Gas Controls are fully modular. You can select a longer or shorter Plunger to get exactly the level of restriction you want. Setting a Gas Control up so the bolt does not unlock when lower settings are used is very popular. We have an article that covers Plunger selection and performance in the RifleBlog section of the website. Check that out and let us know if you have any other questions. Thanks for your interest in Riflespeed.