10% OFF
MARK
Use my discount code to get 10% off your order from Olight. See my video on the PL-3 in action.
markserbu
Hi, I’m Mark Serbu, lifelong gun nut, degreed mechanical engineer, gun designer, founder and owner and president of Serbu Firearms, Inc. I’m also a pretty decent self-taught TIG welder, machinist, CNC programmer and assembly guy. I’m trying to teach the basic principles of firearm design and engi…