Rogerborg

They're both going to perform much the same, neither comes with a battery (*angry muttering about when these were <£60 with a battery*), and both will have that chonky-boi AEP grip. So, I'd agree on following the heart rather than the head on this one. If you do want to crunch numbers, then magazine price and availability can be a factor, and space for a larger battery is always welcome. Barrel length isn't an issue, as you're working with such a tiny cylinder volume - the CM.121 Deagle actually claims lower power than most other Cyma AEPs. The mosfet is... well, better than not having one, but my CM.123 runs fine without one on a 7.4V , and with the stock wiring replaced with thicker stuff. What made the big difference was running a high amperage lipo (remembering that amperage is capacity x C factor, so biggerer is generally betterer).

If you know what you're doing, you won't buy it.

Narp, ~4.5J / 3.3 foot-pounds, so just a regular air gun. You'd get the jail in Jockshire, mind. However, I'd assume that it's actually 450 with 0.2g, i.e. 1.88J plus whatever it creeps to with 0.48g. Still an eye-roller though.

Yup, @Pseudotectonic has it right, test each component in isolation by adding them one at a time. And when checking the nozzle seal, check it with the nozzle forwards, not just mashed back against the cylinder head (it helps to use your third hand for this part). A sparing amount of silicon oil or grease can do a great job of improving the seal. This is a wild guess from just looking, but I prefer my piston rings to be slacker than that. You can take the ring off, then stretch it over the cylinder to slacken it up, or replace it with something a little bigger (and stretch that too if you like) - I use 19mm x 2.5mm nitrile.

I've been using Vorsk 0.28g, 0.32g and 0.43g bio without issues, some of it over a year old.

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Ahoy and welcome, great that you enjoyed it.

Indeed, it's not something that overly bothers me, even though it's entirely possible that my "2.3J" boltie could go over 2.5J with the right (i.e. wrong) ammo, making it an airgun and getting my collar felt up in Jockshire. I suspect it'll really come down to the personal objectives / quotas / "key performance indicators" of the investigating and prosecuting tools of the State.

You shouldn't. Anything under £135 should be charged 20% VAT at source by the seller, with no duties to pay. This is now consistently applied by (e.g.) eBay and AliExpress, although whether the sellers are paying that on to HMRC is another question (but not our problem). Over £135, you get into the weeds of import duties, and we have to pay the ransom fee to release our goods from HMRC jail.

Should know that it's 1.3J, for an auto-capable gun designed to discharge only small plastic missiles to not be considered a firearm. And it's the capability to discharge a missile of any kind. There's nothing compelling the State to drop in 0.2g BBs, or plastic. The intent of the legislation is to limit lethality: they could drop in steel. Not that I think that they will, but we should strive to be technically correct. Try not to sweat it, @Airsoft84, you're a long way from any sort of trouble. However, if you do get another call or an invitation to attend an interview, I would suggest asking to speak to the duty solicitor at the station before making any more admissions. You could also approach UKAPU for advice.

To be fair, who would imagine that to be the case? I mean, it's just a plastic pellet toy, and people play with higher energies in much of the world. Bear in mind that the 57A airsoft definition is "a missile (of any kind)", not what you intend to use in it. Guns prone to Joule creeping (HPA, some gas, full piston / short barrel AEGs) might turn out to be Sections 5s, if the tools of the State were to drop a 0.86g steel BB in there.

Sad that you had to lobby so hard to get your hall looked at.

[Cross posted] Have you received any firearms declaration or exemption forms yet? I ask because, strictly speaking, something capable of over 1.3J and auto fire is a Section 5 (1) (a) prohibited firearm, as daft as that sounds. Since you haven't received it yet, you could file a dispute with the seller or your payment processor. That would be a bit of a dick move, but on the other hand, a commercial seller should know fine well that it's a no-no to send a 1.4J autogun into the UK to begin with. If you do get a knock on the door or a nastygram from Border Force or the police, say nothing, admit to nothing, and get legal advice. Firearms convictions are no joke.

I bought in the full knowledge of what was in there, after watching this torture test and strip-down. Minimal lubrication, decent gears, but one of the plastic bushings melted and failed. I have to pull him up on complimenting the air-seal though. Testing with the nozzle pushed hard onto the cylinder head isn't what matters, it's the seal with it forwards that counts. Barrel, bushings, o-ring nozzle and a bearing spring guide are going in now. I shudder to think how many time I'll need to have it apart to tune the energy though.

Oh, good call. The original hi-cap mag from my CYMA CM.516 feeds fine.

Ahoy and welcome. I'm a tan-fan too: the beiger the better.

100N, as that's what Skirmshop had in in stock when I bought. I'd suggest going a bit higher if you can, as that's giving me bang on 2J with 0.43g, hopped with 9.4 on the dial. However, what I also bought was the Rapax 004 spring tensioner kit, i.e. some rings that you can pop in to pre-tension and get bit more power. Given how quick and easy the spring change is, you can realistically do this at morning chrono, or at lunch, to dial it to bang on your site limits. With those I can tune to just short of 2.3J, or 2.2J, the limits at my regular sites.

Cheers, I see them now. Nice one, living the dream. And damn, Amanda Tapping is now officially GILFy. That smile.

V V V ... possibly with some persuasion. All of my other M4/STANAG mags were a tight fit, and needed half a mm or so filed off the rear. The feed tube on the stock mag is set 1mm or so further back than any of my other mags. Some of my mags still don't feed and will need modified further. As I said, it's a project gun. It does work out of the box, with the supplied mag, but anything beyond that will need some time and fettling.

I can't see those pictures, so I'll have to use my imagination.

Oh, the regular TAC-41 (polymer stock) is a bit heavier than I'd like. Not unusably so by any means, but I prefer to stand or kneel rather than lie in the tick-infested swamps that we have for airsoft sites up here, and I'm constantly looking for things to rest it on. Oh, I hadn't even spotted the Lite Sport, only the Lite. Hmm, that's a tricky one. The trigger components are still steel, and decent plastic can probably do as good a job as metal on the rest of it, entirely depending on the QC. That's a tempting price.

Perhaps Chinese seconds are like Chinese lumens, or airsoft metres.

And then the support, or lack thereof. £100+ on AliExpress after VAT. Compared to £71 for an XT from a UK seller and all-round good chap.

Not of the Lite, but the only thing I dislike about my TAC-41 is the weight. The mechanicals are great, and the only thing it needs out of the box is a spring suitable for your site limits - and the spring change procedure is super-simple. That done, it shoots like you're watching a YouTube sniper video. If you can live with the looks, I'd definitely consider it. Although as always, if you can cadge a go on site with one, that'll help to make up your mind.