ARES Octarms M-LOK Rail System for M4 / M16 Series Airsoft AEG Rifles (Color: Black / 5.7")

"Like all the other reviews it does sit probably 1/4 of an inch off the receiver, but this thing is absolutely amazing and very strong feeling.

"I think it is mostly a good rail. The quality is certainly good, but as many previous reviewers mentioned, it does not seem to fit flush to most other brands bodies and the AEG I used it for (A&K Mk12) was no exception.

Pros
Streamlined shape with a nice, good looking finish
Comfortable to handle (I prefer holding it directly, no vertical or angle grip for me)
Lightweight and with lots of space for M-Lok
Easy to install - AR-15 or comparable wrench highly recommended. Spacing shims included
Mock gas tube still fits underneath

Cons
The top rail of the hand guard sits lower than the rail on my receiver
There is a gap about .05 - .075 between the rail and my receiver

Despite the imperfect fit, I think my setup still looks really slick with this hand guard. If a perfect fit is a must for your build, I would stay away from this hand guard. I am quite pleased with the overall quality and I am glad that it mostly works out with my setup.

"I just installed this on my G&G CM-16 R8L, my first ever airsoft gun, and it made my gun look brand new. it is very sturdy and very light. The installation was not hard, G&G have a painful nut set up, nothing some pliers and elbow grease can't help. The rail does not however fit flush with the receiver and it is about a credit card width lower than the picatinny rail on top of the receiver, but it is extremely hard to see. But great rail for an amazing price as well.