Madbull Daniel Defense 4" Lite RIS Kit for Airsoft M4 / M16 Series (Color: Black)

"Fantastic little rail. Another quality Madbull product!
10/10

"This little rail is awesome! The quality of the parts is great, the machining is clean, and everything threads well. The inner barrel (although short) is clean, and from what I've noticed is very consistent, even at some distance. I initially installed this on my Krytac CRB and when I was trying to install it, I found that I had to grind down the little "gas tube" peg that holds the first part of the rail in place but once I did that The rest of the assembly went smoothly. Just be aware that the barrel might wobble a little bit, but that's nothing a little teflon tape wont solve in 5 minutes. I currently have it installed on a set of Calydon Arms receivers and it's as sturdy as ever.

Pros:
Solid rail assembly
Inner barrel is good quality
Looks great even for a short rail

Cons:
Might take a little bit of work to put together, but this shouldn't be hard for anyone with half a brain and a couple tools

"Threw on my combat machine. Looks great. Solid. Shoots great. With this and some krytac internals, what was an eye sore of a gun is now arguably one of my favorite pieces.

"This is a great rail system! Only one complaint is that this is off by 2-3 millimeters of from being mil-spec. So things can get stuck on the bottom. Looks great with the gold kx3 noveske amplifier. It could have to be re threaded on a kwa.

"Bought this for a vfc avalon saber and samurai. It is pretty solid. The inner barrel is polished and decent. The outer barrel has a little play but is a one solid piece so the set screws will hold inner barrel in place. This is good because other outer barrels are multi pieces and set screws causing your barrel to not fit as straight as a solid piece.

Downside. Now this is for vfc avalon saber bought less than a year ago in Michigan USA store. The barrel nut both the one thst comes with this and my original is a little tall for the piece. How you lock the Rails on is that one of the bronze pieces goes on then the barrel ring hold the outer barrel and bronze or rail piece on. Problem is the rail piece is not deep enough to hold the outer barrel in place. So you have two options. File or machine the pocket deeper which is more of a pain. Easy solution file down or grind down the barrel nut that comes with this. This allows you to keep your original barrel but unaltered. File and check often if you file too much the bronze will be lose and cause to spin. Not a big deal if you do. When you attach rails they will pull the ring to the barrel nut any way. But I like having that solid fit from the barrel nut.

I recommend it. Another good outer barrel that works well with this is the five inch matrix barrel.

"Iv'e just purchased the kit and installed it on my G&G CM16, When I opened the package it seemed simple enough, but the threading on my receiver was too long for the barel nut to hold the handgaurd in place tightly. All I had to do was grind down the threading, and it fit perfect. Overall im happy with the quality but the install may require a little modding