Gunning in T2 is very frustrating. In T3 the alchemer bullets travel faster, but in T2 they're pretty easy to dodge. The magnus is hampered by being pure pierce, and the antigua does next to no damage on top of that. The Autoguns are useless due to post-hit invulnerability and leaving you a sitting duck while firing, the Kilowatt is only really good for spamming choke points, and the super blaster is as uninspiring in LD as it is in the clockworks. Finally, the toxic catalyzer is just a joke.

If you're running with 2 weapons and want to gun in T2, I'd suggest going striker and taking a shadowtech and either voltech or kilowatt (I assume you only have 2 slots?).

I really recommend a Kilowatt Pulsar. Shoot at people who are busy fighting someone else. This is probably the most annoying thing I've ever had done to me.

I don't even pay attention to any other gunners at all. I often just take their hits without a care.

Forgot to also say, the Lightning Capacitor is quite good. Both of those weapons would probably be pretty nice. This would pretty much be a completely support role. Ideally I'd say get a third weapon and take a sword, but that's really up to you.

No real comment on the armors. They're pretty nice with those UV I guess.

Nightblade isn't as good as you think. I thought the same thing you did. I knew nearly nobody in Tier 2 Lockdown had Shadow Protection, but you're far better off with a Twisted Snarble Barb or a Swift Flourish, even though a bunch of people wear Dusker.

For Recon, I suggest Kilowatt Pulsar and Haze Bomb MKII. In Tier 2, nobody understands the deadliness of Stun, but most have enough sense to avoid any clouds of colored gas. But if an unlucky person walks into it, you can kill the victim easily.

What I don't understand is why did you include your accessories? They have no impact other than for looks. :P

Oh yes, and I've had experience with the build I mentioned up there. It's absolutely amazing for decoy purposes, annoying the hell out of everyone. Just drop Haze Bombs when you have the time and when someone approaches, hide and pop up somewhere, then fire Kilowatt. GREAT for packs of people. It can split them up easily. Of course you could use Lightning Capacitor instead of Haze Bomb MKII, but they're both pretty good.

Well, for me, wearing full Dusker and Striker, I see about 3 and a half bars getting knocked off when I swing someone with Swift Flourish. I use Nightblade, gives me about 4. I mean that it gives a better damage output but the Swift Flourish, unless you somehow have an at least High ASI on the Nightblade, is faster and safer to use, as well as having a wider swing. Stun in T2 is good because most people don't know what to do after they've been stunned. Do they run? Do they try to kill you? Strikers I've seen attempt to kill me, only to fail miserably. Guardians pull up their shield. Recons... same as getting hit with any other Vaporizer, as well as not being able to get far if you're chasing them down. I think that Stun is better for Strikers and Recons, but Shock is better for Guardians. Well, Shadowtech Alchemer MKII is still a viable option, but as Nicoya-Kitty said, it's far less useful than Umbra Driver in T3 Lockdown. Anyway, the strategy I mentioned is good for being a decoy/distraction/nuisance to the other team, not for taking on the entire enemy team on your own. Really frustrating to opponents if you can work the magic of Recon. Trust me, I've suffered enough at the hands of those people. ;)