Got bored today not much going on in the shop. Since no one makes night sights for the m&p shield that truly fit well ( no over hang ) I decided to turn my factory sights into h&k styled phosphorescent sights!
They've been glowing for hours. Not as bright as the initial burst of light to charge them but still glowing strong. If they hold up (survived a 30 minute bath in my ultrasonic so far) and get a good long glow I'll set up a few other toys with this set up. So far 4 hours on a quick 20 minute charge under a desk lamp.