AIM Sports M4 Carbine Drop in Quad Rail Handguard

"I bought this for my Matrix M4 challenge kit and had a very difficult time putting it on. It was a tad to long so the delta ring is pushed up against the upper reciever so it is not coming off any time soon. When attaching the RIS system make sure to line the screws on the left and right of the barrel cause if its on the top and bottom some vertical grips or attachments wont slide on. Overall not a bad buy and It is good quality.

"I got this RIS Set for my G&G GR-16 and it does look good and eventually fit well. Just getting this makes your rifle look better.

The only bad thing about this is the quality control must not be great because mine did not fit at first. I had to file down a little metal knob to make it fit. Once you do this it is extremely sturdy. Mine does not budge even with rough use and a vertical foregrip.

One other thing I don't like is you can NOT store a battery inside the rails. This means you either need to store it in a PEQ box, crane stock/full stock, or battery pack and to me the only one that looks good is changing the stock. Currently I have a PEQ box and it works; it is just a bit of an eye soar.

The rail covers look like crap, however they do their job. They cover the rail to make it more comfortable and fit fine.

In Conclusion, if you want your M4 style rifle to look more tactical, get this.

"This is a great piece of equipment, easy to install and self explanatory when installing. However with that being said, it was a little bit longer than the hand grip on my Echo 1 M4A1 so I had to take off the front sight to put it on.

"Will it fit on a KM4, also does it come with 12 rubber paddings or 9 cause I only saw 9 in the picture

"Really good quality rail! But did not come with the railcovers as advertised.

"I'm sorry if this is a dumb question but I am thinking of buying an M4 where the battery is stored in the front of the gun (where these are located) and i was wondering if these would have enough room for the battery that comes with the gun?

"I have this and a gr16. i can make it sort of fit after 2 hours of struggling. so Basicaly the answer is not properly.
besides that it is great quality.

"This just got delivered today and a previous comment said it would be very easy to install on a KWA KM4 Commando, however I can't get it to fit into the spot where it should go, it also does not come with rubberized rail guards as advertised. If someone could help me to figure out how to install it that would be great.