The SIG 551 by ICS is a superb airsoft weapon. ICS has done a fantastic job on this rifle with great attention to detail. The body is made of full metal with the same trademarks as the real steel weapon. The fire selector switch is ambidextrous and clicks perfectly into place when switching between fire modes. The stock is very solid and can fold to the side for CQB situations. This is the full length rifle so it is also great for field play. The battery is housed in the front of the weapon. The handguard has two side rails as well as a bottom rail for adding accessories. Overall this is a very high quality AEG.
I use this gun pretty hard when I play, it gets pretty dirty and I put it to hard use. ICS makes great guns with great features.
Pros: great performance
High rate of fire (with a 9.6 nunchuck)
The bolt for adjusting the hop up broke off
A screw went missing
Hop up broke
(After one month of usage)
Little long for me
Battery storage is tight (9.6 stick won't fit), easy to pinch a wire
Taking out and putting your battery is difficult
All in all, its a great gun, you just really have to take care of it Unknown
May 12th 2015