Your faiure to feed is most likely caused by your not completely releasing the slide. Don't try t baby it, just pull it all the way back and let it go.
As for the slide lock, thats exactly what it is, a lock, not a release. The best way is the drop the mag at least partially, if it's empty, pull the slide back and reease it.
As for the slide lock, thats exactly what it is, a lock, not a release. The best way is the drop the mag at least partially, if it's empty, pull the slide back and reease it.