I just received my L1 back from Barry today. I had damaged the driver when I tried removing it from the body. I really liked the compact body, aggressive knurling and UI of the L1 so I sent it to Barry to have it bored out to 18mm. I can now run primaries and a variety of rechargeables through it along with many head options. I am now running a Malkoff M61 219 in a VME Head wth 2 primaries in a Delrin sleeve. I also added a 2 way clip and attached a combat ring (rubber oring) to the lanyard ring. This is now my new and favorite primary EDC. Thanks Barry. Awesome job.