Caleb Downing 07.05.20 Dave Propri SDI is really worth the time and worth the investment. I don’t know where you’d get this caliber of education and knowledge in the package you can get it in at SDI. RELATED STORIES Firearms Tech Three or Five Shots? How to Confirm Your Zero. read more Military and History In Remembrance of D-Day read more Grad Features GRAD SPEAK: Holding Down the Fort with Robert Hinkle & Nick Johns read more