The G4-A3 is a wonderful gun. This is just a preliminary review but nearly everything advertised about the tactical carbine(s) has been honest and accurate.
The video about the G4-A1 says that the gun is extremely light. Either the guy on the video is used to really heavy guns or what he says doesn't go for the A3. The Olympic Arms RIS (cool little gryphon logo near the back. There are little holes in the rear of this RIS, reminds me of a revolver or gatling gun) is fairly heavy but there is plenty of weight in the back. With a stick battery in the stock, the center of gravity (balance) is actually near the front end of the trigger guard! I usually like heavy guns myself but this guy feels pretty much perfect.
The iron sights are metal and very sturdy. The front sight stays down on its own (push a button to bring it up) but the rear sight needs a special pin to be held down. Careful not losing that guy. The rear sight has a very small hole. The sight adjustment is intuitive, sturdy, and fine. That being said, at this point I had to move the rear-sight very far right. In addition, I couldn't find a way to change the vertical orientation of the sight. My gun's shooting a little high at the moment.
The plastic on the receiver is NICE. Feels very good. As does the RIS: it's very jagged. The grip isn't what I would call ergonomic but it's still comfortable. As far as aesthetics, this gun has realistic color and just....looks awesome in my opinion. The RIS and iron sights don't seem out of place at all.
I haven't chrono'd this gun but just eye-balling it it seems to be around 400 fps. I have trouble tracking the BBs across the yard at times.
This is a ridiculously good buy. It's not full metal, but honestly I'd rather it wasn't. Especially if you're on a budget, you want to go with this gun. Thanks so much, GI!
-Convertible barrel lets you replace not only the orange tip with a silencer but also the whole front 5 inches or so. If you take the whole thing off, the inner barrel protrudes by 3-4 inches. A silencer might let the inner barrel wobble too much though, and affect your accuracy.
-Hi-cap seems to be working just fine
-Blowback is cool. Pull the slide back to open the "chamber".
-Solid fire selector
-Decent to good accuracy (after minimal tests)
-Great weight/feel - relatively comfortable foregrip, pistol grip, and stock
-Quick access panel on the butt plate so you don't have to unscrew anything or worry about losing the butt plate
-Does not fit 9.6v LARGE battery no matter what you do - the long pin holding the stock into the receiver is in the way. Get a mini (or maybe a nunchuk?)
-The rear sling mount has a little square nut on the interior end. It twisted up some cheap plastic on the inside. That's a nitpick though
-JBU Vertical grip DOES NOT fit this RIS.
-Sometimes the safety engages after a single shot of semi-auto...then I would fire it in full auto, come back to semi-auto, and semi- would work again...very weird. No huge deal.
-You need high-profile ring mounts to put a scope on top of the receiver
-Doesn't come with battery or charger, but stock batteries are always junk anyway
Rating: [5 of 5 Stars!]