Well, got bored with my DBoys M4SD as it was, so I did a minor tweak:
Basically, I removed the stock mock silencer and swapped it out with a Noveske Fire Pig "loudener". This necessitated a shorter barrel, so I put in one from a Galaxy MP5K-PDW. I also added on a flip up front sight and a carry handle for optics, and UTG rail covers to prevent the razor sharp rails from slicing my hands up.
The inner barrel goes right up to the flashhider, and the loudener actually does as it says, making the shot a louder, more pronounced metallic pop.
Closeup of the muzzle. Looks like a 40mm launcher, lol...
Shot into the muzzle, inner barrel visible.
Haven't performance tested it yet, but I'm estimating FPS right at 300 or so, and 100' accuracy, making it great for CQB. Battery juice is provided by a 9.6v 2000 mAh intellect crane pack stuck in the stock.
It needs a basic reflex sight instead of the carry handle, but I don't have one, so the carry handle stays for now.
After that, things got a little nutty when a CM030 AEP G18C magically ended up on the bottom rail, like this:
Glock-pod v1.5 is now on it.
In real life, this gun wouldn't function in several ways, no gas assembly, no room for the glock to cycle, rail attached to slide, etc...
But in airsoft form, it works, and it works well. 14 RPS on the M4, 14 on the G18 = 28 RPS with two simple trigger pulls.
You'll be seeing more iterations of my glock pod in the future, as this was the VERY rough first draft.
My lowes was out of the actual rail mounts I needed, so I improvised, and in my impatience for waiting for the actual G18C rail mount to get in stock, I hard mounted a rail to the slide, which is only a temp solution.
I can still reload both guns, provided I use VN mags in the M4. Regular M4 mags are a no-go unless I mount the G18 further up.
Overall, this is my new CQB M4, and I am in love with it. It's loud, sounds awesome with both guns blazing, and is super maneuverable.
Now I have something for when my primary is too powerful and there's no time to switch to my secondary pistol. I keep my secondary on my gun, lol...
Scooted the G18 further up so I can use regular M4 mags. Made it a touch comfier to hold as well:
The view from the front of this thing is hilarious, because it looks like a shell fed 40mm launcher of some sort with a glock attached to it, lol...