Cannon Meat's Arm Cannon & Triple Laser Guide
Introduction
The Main focus of this Guide will be about the different early to end-game Gear for Arm Cannon and Triple Laser.
(sadly i m not fond with the melee build hopefully someone writes a guide for it soon)
If you need guidance for lvling you can check out Spike's Guide as Meister and Biolo are very similar to play, exept you have mado gear support skills and don't have a homunculus.
Builds
 Arm Cannon
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Spark Blaster build. Tt will initially do a bit more dmg than Arm Cannon but can't be spammed and you can't use your elemental advantage of Cannon Balls.
Clementia or 
Poem of Bragi at the cost of DPS.
 Triple Laser
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Triple Laser
Stats
Gear
Shadow Gear
Costume Enchants
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Useful Tips
- You can cancel out the Animation of
Magnum Break by casting 
Infrared Scan before or after casting it (you will need more ACDR to do it more efficiently). 
Neutral Barrier can be made smaller if you stand next to a wall
Shape Shift is very useful against strong fire/earth/wind/water attacks
Rush Quake is your most important buff/debuff. Not only does it increase your ranged damage by a whopping 50% for 5 minutes long, but it also debuffs the target so it takes 50% more damage from both ranged and melee attacks, which is useful at MvP-ing and in party gameplay.- (similar to GX's
Dark Claw and it even adds up with dark claw) 
Stealth Field sometimes might be useful to cancel Neutral Barrier- /bingbing /bangbang on a hotkey (use Alt+M keyboard combination to change them) can be used to quickly turn while spamming
Front Slide / 
Back Slide to move really fast (with high enough ACDR it is the fastest way to move in the game) 
Hover can be used to ignore some ground effects like 
Quagmire
Weapon Perfection is reason why you will never worry about any size penalties, and it should be always active in battle
Activation Defense Machine is reason why you may want to choose MRES and WIS over RES and STA
ABR - Mother Net could be used to help to maintain your HP and SP pools- Do not underestimate
Two-Handed Axe Defending defense bonus - Arm Cannon absolutely CAN NOT be spammed without instant cast, do not even try it. If you need higher DPS while leveling as Mechanic, try to use
Knuckle Boost instead
F.A.Q.
Q: Where to buy Cannon Balls and my MADO-gear stuff?
A: You can find all you will need at Merchant Dealer at Main Office (main_office 60, 63)
Q: I want alternate MADO outfit to not look so boxy! Do I need to buy 
Alternate Outfit Coupon (50010) ?
A: No. All you need is 
Emergency Mado Gear (Reinforcement Suit) (100158) , it is usable item which could be bought from Merchant Dealer.
Q: My 
Manufacture Machine do not work! Please help me!
A: First of all you need 
Machine Creation Guide (1000352) in your inventory.
Second, you will need all mentioned in guide items in sufficient numbers:
Magic Gear Fuel (6146)
Mini Furnace (612)
Oridecon Hammer (615)
Q: Game is broken! My cardinal gf can't heal me! Agi Up do not affect me!
A: Riding MADO-gear is reason of this. Use 
Acceleration skill to have second-after-genetic Movement speed in-game.
Q: Does Arm Cannon ignore DEF and RES?
A: Yes and no. Arm Cannon treats them as Soft DEF which is negated from final damage. With millions in damage numbers you won't even notice it.