"The SMG-8 is a great choice for someone who wants a compact rifle for field use. However, it does have a couple drawbacks... several in fact. This review will consist of a general overview, performance and chrono results, the BIG issues, and finally the pros and cons of the SMG-8. Keep in mind that this review will be fairly long, as I have A LOT of experience with this gun and will cover EVERYTHING in this review.
First, the general overview. I'll spare you the basic stuff so I won't mention what's included or all the basic features of the gun. What is handy however, is the little bag of parts WE includes with this gun. Anyways the external build quality is decent; the gun is very light because of the polymer construction, but still feels rather durable. The design is pretty favorable and overall looks appealing, although maybe not as much as an actual MP7 design (to some people). The price point is slightly high of what I would actually pay, but it's not all that bad. It hosts a bunch of rails for you to attach most accessories (I am currently using a micro red dot, stubby grip, and rail covers). Note that if you do decide to attach a compact optic, you may need a riser like I did.
Now we move on to the performance and chrono section. All results below have been achieved with 0.20g bbs and propane and measured using my XCortech X3500. The fps is ~395, putting is just under the maximum for outdoor fields (which is perfect in my case). The rate of fire is ~17 making it a decent full-auto candidate. I haven't really messed with the hop-up, but out of the box the range wasn't too good, only achieving an effective range of 100ft (However it can probably increase with some adjustments). The accuracy is pretty good at that range however, and shots are pretty consistent for the most part.
Here is the fun part... the deal-breakers:
Almost as soon as I got the SMG-8, the stock had problems collapsing randomly while firing in full auto mode. Now thanks to that handy bag of extra parts included with the gun, I was able to swap out the current stock locking piece with a better one. The difference was that the one previously installed in the gun was made of zinc alloy (pot metal), where as the extra one was a much stronger iron mechanism. In case you aren't provided with an extra one, but are still experiencing stock problems, here is a manufacturer's link to the part: http://www.weairsoft.com/parts/gbb-gas-blowback/rifles/smg-8-
The next issue I noticed is that overtime, the little notch in the stock locking mechanism will carve into the stock arms, causing a build-up of aluminum, that needs to be filed down for the stock to slide smoothly.
The trigger is also very spongy on semi-auto, and requires you to fully press it all the way to reset it. Sort of a pain but the trigger pull is fantastic and light on full-auto.
The last, or shall I say "latest" problem that has occurred is that the charging handle broke while firing and is unable to be fixed. I tried superglue and even welding plastic to it (to the point where it almost look brand new), and it still failed. Now I was firing with propane so there was more pressure, but I can bet that the same would have happened with green gas sooner or later. It's honestly pretty stupid how WE had to make the charging handle out of plastic, when it has to endure so much force while firing. The least they could have done is made it aluminum or better yet steel... but there is another perfect example of how WE-Tech cuts corners. Anyways the gun still firing fine and no issues because of the missing charging handle, but the gun looks funky and looses value when pieces like that are missing. If you feel the need, you can buy another plastic charging handle on their website: http://www.weairsoft.com/parts/gbb-gas-blowback/rifles/smg-8-
-series/smg-8-gbbr-part-11.html. Fortunately, I have resolved all of the above issues except for the spongy trigger pull.
Onto the pros and cons. The pros:
-Easy to use features
-AMAZING magazine (holds 44rds, all metal, and no leaks)
-Rate of fire is great
-Stock is nice one you get it working
-Rear and front sights are HUGE, making it easy to aim (but also harder to attach optics)
-Crisp blowback while still being gas efficient
-Consistent and accurate shots
-Requires a lot of maintenance (like most gas guns though)
-Build quality is garbage
-Price point is still too high
-So many small issues that it makes you want to pull your hair out :D
-Range isn't very good
The rifle isn't bad.. I justify the 3 star rating for the gun being great for most occasions, but only once you have fixed all of the small issues that come with the gun. Honestly it's not all that bad, so maybe it is deserving of a 3.5, but for people who aren't familiar with gas guns or how to fix them, this thing can be a real pain in the a$$. However I can guarantee that once you have moved past that point, this rifle will be a dream to use; it just requires some time and commitment to turn this thing around into a dream SMG.
"For someone who wants a good cqb fun, look no further. This is a great buy. You get a well built mp7 with high fire rate and good power for the price of a beginner AEG. Most of the time Mags for gbb are expensive but the Mags for this are cheap also. I have found one problem so far and its not the worst thing. After a couple hundred rounds the stock wants to close on its own but you can get the parts to fix it for $20 here on evike.
Good weight (middle weight for size)
Low cost replacement partd
Stock kinda sucks
The mag release runs against my fingers when I shoot and is uncomfortable
Trigger feels like an AEG trigger.
Orange tip is damn near impossible to get off. Even though it comes with a 12mm thread to 14mm thread adapter
Over all is a great gun with small flaws.