I'm looking for very high quality, square (camera perpendicular to markings), well lit photos of Colt/FN M4, M4A1 and M16A4 lower receivers.
All I need are the magazine well markings and the selector markings. It's surprisingly tricky to find really good photos.
Any help would be highly appreciated - my email is draetheuscATgmailDOTcom if you want to send me something directly. I've cross posted this and will update each thread with good pictures when I find them.