Wood dowel. Hammer it out to thE breech. No harm done. Glad you didn't fire another round. It's called a "squib". Happens once in a while with us .22 shooters. Watch your target folks! Haha
Well done! I do kinda like the way that the slide was left a dull gray. No reason to be afraid to experiment with a Glock!
Did you leave the magazine base plates camo? Kinda think that may have looked cool. Thanks for sharing!