The Firetail is modeled off a fighter frigate known as the Shamrock, a design used by a small, now-extinct pirate faction known as Lazari Dromitus. The blueprint found its way into the hands of Matari military forces after a raid on Lazari Dromitus's headquarters succeeded in killing its leader, thus beheading the organization and scattering its remnants to the four winds. It has since been improved upon and upgraded, and the Firetail is now a mainstay in most Republic Fleet patrols.
The Firetail is best described as a lighter, faster Jaguar. The slot layout is effectively the same (the Firetail actually gets 3/4/3 with 2 turrets, but a 20% per level turret bonus rather than the Jaguar's 10% - a holdover from when this ship had a mix of turrets and launchers, and CCP didn't want to add further turret hardpoints when they rebalanced it). Common fits for the Firetail are also very similar to the Jag, with a medium shield extender as standard and either prop/scram/web or dual prop & scram being the most common combinations. As with the Jag, an armor tank is possible, and this can potentially be flown as a 'super rifter', although this is less common.
The Firetail's damage output is reasonable, but nothing to write home about. The ship's CPU and powergrid are quite limited, making most common fits very tight in comparison to the equivalent Jag fitting. This ship can field quite a solid shield tank, but again not to the levels of the Jaguar. Where it does come through however is on speed (where it's capable of 3.5-4.5km/s with a mwd, on par with some of the combat interceptors) and in the presence of the ever-useful tracking bonus that AFs like the Jaguar lack.
The Firetail's speed makes it adept at chasing down fast targets and at dictating range in a solo engagement. It also makes the Firetail a very effective ship in gang when filling a 'chaser tackle' role.
Like the Claw, the Firetail receives no turret range bonus, and because of this (and its tracking bonus) you're usually better off holding it at range where possible, assuming your weapon system (and speed) gives you the option. It can still hit out quite far with barrage, but real DPS will reduce quite a bit as range increases. Since Firetails are usually shield tanked, EM or thermal damage is recommended. Firetails have a spare high slot, which may fit a nos or neut if they have the fitting room - beware of this if you rely on an active tank.
Minmatar Frigate bonuses (per skill level):
[Republic Fleet Firetail, Solo Nulsec Duel Prop] 200mm AutoCannon II 200mm AutoCannon II Rocket Launcher II 1MN Afterburner II 5MN Quad LiF Restrained Microwarpdrive Warp Scrambler II Medium Shield Extender II Gyrostabilizer II Nanofiber Internal Structure II Micro Auxiliary Power Core I Small EM Shield Reinforcer II Small Projectile Burst Aerator I Small Thermal Shield Reinforcer II Republic Fleet EMP S x500 Republic Fleet Fusion S x1000 Republic Fleet Phased Plasma S x1000 Caldari Navy Inferno Rocket x100 Caldari Navy Nova Rocket x100 Nanite Repair Paste x50
[Republic Fleet Firetail, Scram Kiter DualWeb Artillery] 280mm Howitzer Artillery II 280mm Howitzer Artillery II Warp Disruptor II Fleeting Compact Stasis Webifier Fleeting Compact Stasis Webifier 1MN Afterburner II Damage Control II Gyrostabilizer II Nanofiber Internal Structure II Small EM Shield Reinforcer I Small Projectile Burst Aerator I Small Projectile Metastasis Adjuster I Republic Fleet EMP S x240 Republic Fleet Fusion S x240 Republic Fleet Phased Plasma S x1
[Republic Fleet Firetail, Brawler TD Firetail] Small Ghoul Compact Energy Nosferatu 200mm AutoCannon II 200mm AutoCannon II Warp Scrambler II Balmer Series Compact Tracking Disruptor I 1MN Afterburner II X5 Enduring Stasis Webifier 200mm Steel Plates II Small Ancillary Armor Repairer Damage Control II Small Projectile Burst Aerator I Small Auxiliary Nano Pump I Small Explosive Armor Plate I Republic Fleet Phased Plasma S x480 Republic Fleet Fusion S x480 Barrage S x480 Hail S x480 Nanite Repair Paste x32
[Republic Fleet Firetail, TD Kiter] 280mm Howitzer Artillery II 280mm Howitzer Artillery II Small Capacitor Booster II Warp Disruptor II Balmer Series Compact Tracking Disruptor I 5MN Y-T8 Compact Microwarpdrive Overdrive Injector System II Nanofiber Internal Structure II Damage Control II Small Projectile Metastasis Adjuster I Small Core Defense Field Extender I Small EM Shield Reinforcer I Republic Fleet EMP S x240 Republic Fleet Fusion S x240 Republic Fleet Phased Plasma S x240 Navy Cap Booster 100 x20