The replica, when taken out of the box, looks very good (it is available in two color variants). It is very light, the manufacturer decided to use composite receiver castings (nylon fiber), which may deter some, but it must be noted that the composite looks very good and does not look like tacky plastic.

The front grip and rail on the top are made of metal. Unfortunately they do not match up evenly and in some cases there may be a problem with mounting the optics.

The collapsible buttstock is inspired by the MP5's design and is comfortable and functional. After pressing a button it extends automatically and allows adjusting its length to the shooter's requirements.

The silencer is built into the outer barrel without the possibility of taking it off (as in the real firearm). In the replica is actually hiding the inner barrel.

Magazine release is wide and a very convenient. A similar solution can be found in the "Amoeba". Another similar design is the tactical pistol grip, where we can find embossed Amoeba logo. The two-sided fire selector switch allows you to set the safe, semi and auto firing modes (after reprogramming, also a burst fire mode).

The iron sights are of the flip-up type. The downside is the fairly weak position block, so they like to fold or fold accidentally.

Replica disassembly

The replica is disassembled in a somewhat different way than the traditional AR-15 type replica. After removing the front pin which, and this has to be pointed out, gives quite a lot of resistance when being removed, we slide the upper receiver forward which, due to the unusual design of adapted to the buttstock, is blocked by the bolt catch. It needs to be removed the moment when we feel the resistance. After doing all of the above we have access to the chamber.

The hop-up chamber is very goof and airtight, with adjustment in the form of a ring (similar to the one found in G36 replicas), which allows for quite precise adjustment of the hop-up. The design decision to integrate the spacer into the spacer lever can be a debatable solution for some. In this case, we are dealing with a standard shaped spacer. I met with a similar solution in Amoeba by Ares, only that the built-in spacer was shaped like an hourglass, so it is likely that it will be compatible with this replica. A very interesting solution is the stabilizing ring, which sits tightly and holds the chamber stiffly. The hop-up bucking is an Ares standard one, soft and aquamarine in colour. When taking the inner barrel out it got stuck in the chamber as it was "glued" there with some strange sticky grease. In this case, the best solution is to use tweezers to pull it out so as not to damage it. I've never been a fan of this bucking, but I can say from field tests that it behaves very well with the stock barrel and hop-up chamber.

The manufacturer does not give any information about the barrel. It was probably made of aluminum. It is black and its length is 35cm. It is adapted to the length of the outer barrel. The outer barrel is permanently connected to the silencer, which covers the end of the barrel.

After unscrewing the buttstock we gain access to a "quick spring replacement system". We will need two different hex keys, the first of which will have to be long enough to go all the way through buttstock guide, and the other, simply larger in diameter, to get out the spring guide.

To get to the gearbox, apart from taking out the two usual pins, unscrewing the magazine release button and the pistol grip, we also need to unscrew the two-sided fire selector switch. It is quite difficult and discouraging, given the possibility of losing springs and mushrooms which, when you are disassembling the selector, are they like to pop out.

The Gerbox is a modified V2 type (ARES EFCS Gearbox) with additional gears from a two-sided fire selector switch, which we have to watch out for because they just like to fall out of the frame. The EFCS is an electric programmable trigger system, integrated into the gerbox, which normally gives us the possibility of semi and full-auto firing and, after reprogramming, the option of setting a burst mode. An interesting solution seems to be running the wires outside the gerbox in specially marked grooves. The advantage of this solution is the replacement of wires without opening the gerbox, but the downside is a fairly limited space for mounting thick low-resistance RC wires.

To get inside the gerbox, unfortunately, you need to unscrew a bit more screws than in a standard one. Access to one of the screws is blocked by a part of the electric trigger system, held in place with four more screws. You can not forget about a plastic ring, which we put on the back of the gearbox, which is probably used to compensate for the slack between the upper and the lower receiver.

The interior looks very decently. We have standard Ares gears. On the sector gear, we have a plastic delayer of the tappet plate (which should result with better BB feeding). There is enough grease on the gears (i.e. not too much). Still I would recommend replacing it. The shimming of the gears in the unit which we got for testing was, unfortunately, not good. The bevel gear and the sector gear worked well, but the spur gear was quite tightly compressed in the gearbox. I suggest checking the shimming and the simultaneous replace the lubricants as the first step during servicing the replica.

A very good solution seems to be a piston with 14 metal teeth, which makes sense in combination with the possibility of a quick replacement of the spring. What is surprising is the use a type "0" cylinder with such a short inner barrel. I didn't notice any negative influence of such a choice on the replica's performance though. I think that when deciding to change the inner barrel to a precision type, it is worth considering replacing the cylinder for a type "1", at least. However, seeing how the stock replica works, such tuning does not seem necessary. The cylinder head and the piston head are made of polymer and, together with the cylinder, form a very airtight system.

The motor used in the replica does not have any manufacturer's marking. In the manual we can find information that it is a "Long Torque Flat Motor", unfortunately it does not have very strong magnets. It behaves decently with the stock configuration, but when using a stronger springs, it may require replacement.

Summary

The replica looks great, not very high fps values in stock do make in noncompetitive in a woodland environment. It is very accurate, which is probably due to good centering. The BBs fly straight, and in the final phase they fall in a straight line without sideways deviations (tested using G&G 0.28g BBs). It's quiet and good performance is a confirmation of the tightness of the pneumatic system. What we get in inside is also of high quality, the quick change of the spring and the electric programmable trigger is a big plus. The fact that when dissembling the replica you have to unscrew more screws is negligible as in many cases it may be unnecessary to unscrew them because the NUPROL DELTA SPEC OPS is suitable for use straight out of the box. The downside for some may be the use of a composite receiver, thanks to which we have a lighter replica, but these two features can be problematic for those who appreciate as much realism as possible. The plastics seem to be very robust, but if something happens, and I know that from my personal experience, you can write to the manufacturer, who will help to contact you with a distributor of spare parts, or give a organize a shipment with the necessary replacements. A small, good looking, light and accurate replica for mobile players.

Dziękujemy sklepowi Gunfire.pl za udostępnienie repliki do testów