Introducing Big Dot and Standard Dot night sights, the ultimate defensive tritium sights designed to elevate your defense gun to the next level. Our sights feature a proprietary photo luminescent glow dot that absorbs ambient light, emitting a powerful glow in low light conditions. The unique convex dot design maximizes light absorption, intensifying the charge of the glow dot. With their large and highly visible size, these sights address various challenges, from aging eyes to diminishing vision. Daylight settings reveal the vibrant orange front dot, while low light conditions are illuminated by the brilliant yellow or green options, offering unparalleled visibility. Crafted with precision, our XS tritium night sights are CNC machined from solid steel bar stock in our very own in-house machine shop, ensuring top notch quality and proudly American-made products. As a small, second generation family owned business in fort worth, TX, our customers are like family to us, and we are deeply passionate about firearms. Enjoy the convenience of easy DIY installation instructions and a 30 days satisfaction guarantee. We also understand that over 5% of the population experiences color vision issues, and we've got you covered - just give us a call, and we'll promptly ship out another color that suits your needs. Your defense and satisfaction are our top priorities.