I was going to put this in the sights and optics forum. But I really had to show all you guys. I just put some new Ameriglo I-Dot Pro's on my G21. These sights are AWESOME. The tritium is SOOO much brighter than the factory night sights and the Orange circle around the front is so easy to pickup in daylight. I HIGHLY reccomend these to anyone looking for a great all around day and night sight system for ANY Pistol. Also, the comparable Trijicon HD's cost about $150.00...I picked these up for $70.00...and as you can see they say Trijicon all over them. I installed them myself, really simple and took about 10 minutes with punch, hammer and front sight tool. Pictures: In the light of my bedroom, normal lighting (both dots are seriously glowing even in the light): In Total darkness: In a room with alot of ambient light...still soooo bright: Few pics of the sights: Wanna kill these ads? We can help!