Evolution 4: Galaxy G.5K

On April 20, 2008, in Evolution, by Louie

Light, easy and deadly is the order of the day in this Evolution, as we go from full auto pistols to full auto submachine guns! The crew take the Galaxy G5.K MP5K for a spin and attempt to draw the line between portable and puny. Fair warning to our viewers: pansies, sissies, and babies need not apply!

Technical Notes:


Like the Tokyo Marui gun that it’s borrowed from, the Galaxy MP5K has a Version 3 gearbox. The hopup is a push-pull adjustment instead of a barrel or wheel type. Unfortunately it’s hidden inside the handguard and will not be easy to adjust in the field. The barrel is 110mm in length compared to 141 in the MP5K PDW and 229mm in a standard MP5 variant. It seems to be of a good quality overall and manages to be about as good as the longer barrel in the standard variant, and even accurate enough to match with a stock M4 CQB barrel at 30 meters.

All told the package adds up to 310fps at 0.20g or 0.89 Joules, with accuracy only just keeping shots inside the outermost ring of our test target (77mm off the center of mass). This level of performance should serve well in the CQB or even jungle arenas where engagement distances are close, but would be decidedly underpowered for the open field.


Finding mags that feed well with this gun has been the main challenge. Galaxy’s own 200rd hi-cap feeds reliably, but being a bit of an off-brand, Galaxy mags are harder to come by, than, say JG mags. But slap a fresh JG hi-cap in there and feeding gets dicey. A period of break-in is needed before the JG mags start to provide any sort of reliable feeding. An old Tokyo Marui lowcap fed well enough, but as lowcaps go those really go fast.

Otherwise Galaxy has done a good job keeping power levels tamed to ensure this gun just keeps on going, even when used primarily as exercised by our wantonly reckless field test team, for wild bursts of sustained full auto fire. It has not quit once since we had it in for long term testing.


Outside, the Galaxy G.5K is a fairly accurate copy of the Tokyo Marui version, so it doesn’t break any new ground on the realism front. Token trademarks that denote the caliber of the weapon are littered around the plastic body. Caliber notation is even carried down to the metal hicap.

As a model of the MP5K and not the PDW, the gun features a cutdown front with no visible flashhider, and it has no stock but instead has a sling swivel for attaching the gun to a one-point sling or a harness. A forward vertical grip is incorporated into the design of the handguard.

Other parts of the gun including the front and rear sight, cocking handle, and pins are metal. The pins are reinforced and have a locking mechanism usually seen in AEGs of higher end manufacturers. The metal on the hicap is prone to scratching on the finish, which could be a minus for some and a plus for others. The plastic is good old ABS and should survive a few scrapes.


The whole point of the MP5K is the small form factor. In real terms it’s prized for concealement, but for airsoft it has inspired players to find ways to incorporate this small AEG as part of a subload. MP5K dropleg holsters have been specially made for this AEG in an effort to drop it into a loadout as one would a pistol, but its use as a secondary weapon is a debatable point, versus an actual pistol which is still much more compact.

As a primary weapon, our assessment is that its exceptionally compact size and weight could conceivably be a crucial advantage for a quick run-and-gun game. However in some ways too much has been sacrificed to make it concealable that the design becomes impractical for airsoft play, as it challenges the player, as with a pistol, to manage controlled accurate bursts without a stabilizing stock. The PDW version that features a folding stock and a longer inner barrel, for a minimal addition in weight and size, would be the more level-headed choice. We also kid about the option of dual-wielding the MP5K, but must admit that dual wielding is less ‘tactical’ and more ‘hollywood’.

Got something to say about the Galaxy G.5K? Let us know in the comments!


Hello and welcome to PinoyAirsoft. Tonight we take a look at a lethal sub gun that can fit in a girl’s handbag: Galaxy’s MP5K.

Typical of ACM guns, the MP5K comes in a bland brown box. Oh, but this isn’t just any brown box. This one promises Super Powers!

What do you get in the little box? The super powered battery with an exclusive super empowering charger. Oh, and there’s a gun in there somewhere. But with a depressing lack of authentic trademarks. And to finish it off a cheesy 200 round hicap.

So, off to the chrono to see how super it really is. Ignoring the misfire, it spits out about 310fps at .2 grams. Equal to a staggeringly underwhelming .89 joules. Rate of fire is average.And the grouping our test target was, well, alright. In fact everything about this gun is alright.

Like a McDonald’s cheeseburger is alright. Scratch that, it’s a happy meal! It’s got all the junk of a regular cheeseburger only bite sized.

Plainly, Galaxy’s started us off all overhyped with this super power business. But do consider that in static tests it stacks up better than the full sized MP5s. ‘In our tests even manages to be as accurate as an A&K CQBR despite being whole inches shorter.

Which brings us to the point of the ‘K. It’s a much smaller version of the standard MP5 in many ways but it’s still better. The MP5K feels like a regular MP5 in every way but shorter. You can even give it the HK slap. Well, until you drop in the battery. It runs the whole length from the cocking tube all the way to the back.

Dropping the battery in involves pulling two reinforced pins off the back, one pin off the front and then a little struggle with the handguard. Battery goes into the back and out through the charging handle. You need to mind the wiring. The space is tight. And it’s easy to fray the wires by accident while pulling the handguard back in. By the way, the hopup adjustment is hidden under the handguard. Not the most convenient location.

We’re still of two minds on this weapon. As a primary gun it can certainly hold its own. But like any CQB weapon, you can get easily outranged by carbines and longer guns. And out in the field, and not in the lab, not having a stock to brace on makes it tricky to shoot precisely.

So what about as a backup gun? If we’re being honest it’s still much bulkier than a pistol, taking space away from your primary ammunition. And you won’t likely need more than a pistol if your primary weapon is reliable. So what is all of this downsizing good for? We’ll it’s for concealment, but useless if you’re not a double-O or a South American drug lord’s bodyguard.

So who’s going to appreciate the MP5K? Well, it is small and does fit in a handbag. So it’s perfect! For your girlfriend. Or your sissy teammate.

So what’s a REAL man like you to do? Well, if you must have it, get the PDW. Failing that just get two! No one will call you a sissy then!

That’s it for this show. Until the next Evolution.

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