The LG-404G green laser sight for 1911 pistols combines Crimson Trace's celebrated Lasergrips® platform with the visible advantages of green laser technology. Using the smallest laser green laser diode available, the LG-401G emits a powerful green beam yet still provides over two hours of run time on (4) #2016 batteries. This product is not compatible with ambidextrous safety levers. We stock shortened ambi-safeties from Wilson Combat® in BLACK and STAINLESS. Gunsmith installation is required.