recently added one to the collection. previously had a 1943 underwood, just added a 1944 IBM. been wanting one for awhile. as someone who works in the computer industry, having a gun made by IBM is something very cool. I need to find better backgrounds. windshield heat reflectors Underwood is the round bolt (front), IBM is the flat bolt (rear). Both are post-war rebuilds (bayonet lug, adjustable sights, flip safeties) Post Yours!