I have had this M203 launcher for about 2 months now and even though it was my first M203 grenade launcher it is awesome!! It really is the cheapest and most reliable,and full metal M203 out there right now. I use this underneath my AGM Full Metal M4A1 Carbine with an NC Star handguard rail on the bottom and it is rock solid. I recommend getting the TSD or sapien arms propane adapter and an Ego/Aquilla grenade shell for maximum performance. Youtube link- type in "Dboys M203" and look for "Jeremy, Matt, and Greg-Anthony" shooting demo.
Full Metal, (Barrel, upper portion, mounts, trigger, main frame)
Comfortable, high quality feeling ABS Handguard
Comes with 2 different sized barrel mounts(for certain delta rings)
Comes with an ris mounting rail for easy ris mounting.
Doesn't come with an Allen wrench for removing, adding, or adjusting mounts.
Safety mechanism in front of the trigger broke on my model.
You will need pliers to lift the front latch of the barrel mount up.
Pros completely outweigh the cons, especially since it is super cheap!!!!