Dennis Winegar 13.09.22 Dave Propri SDI helped me in so many ways. Even with having a very successful second career after retiring from the U.S. Army, SDI helped me to launch yet another chapter in my life that I wake up excited about every day. RELATED STORIES Firearms Tech History of the AR-15 read more Firearms Tech AK Trigger Retention read more Podcasts The Evolution of Firearms With SDI Master Gunsmith Kip Carpenter! read more