Is your mechbay empty? Are you new? Maybe you're not so new but could expand your horizons a bit. You're in luck!
April 18th through the 22nd, 3050 (51?), Earthwerks Incorporated in cooperation with Blackstone Battlemechs Limited will ship to you a brand (cough) used (cough) Thunderbolt TDR 9S. This baby comes stock with Magna 260 standard engine rigged at 64.8 kph but you can always swap that engine if you feel the need.
Remember this is a Thunderbolt, and unlike many mechs it is not limited to simply one primary weapon! For long-range punch the TDR-9S wields a Fusigon Longtooth ER (Extended Range) PPC (Particle Projection Cannon). As ranges close, the Thunderbolt is able to bring three Diverse Optics Type 18 Medium Lasers and a Bical SRM-6 missile launcher into play.

(Truth be told, log out and log back in once the challenge page says it's complete. Challenge page here.
Finally, for anti-infantry use, the Thunderbolt has two Voelkers 200 Machine Guns and its twin Purity L-series Flamers. Pre-built in is a Voelkers Parasol Anti-Missile System and an extra mounting space for a 2nd AMS! Encased in 13.5 tons of armor, this heavy chassis started its career in 2491 as an assault mech. Its classification may have changed but its variety of potential uses have not!
Don't worry; the rumors are true! It's not just noted for having a roomy cockpit comparable to an Atlas or Battlemaster; it does! So on those extended missions know that you are living in comfort. Oscillating fan not included.
For the TDR-9S mech's default specs, click here. It comes with DHS!
Here's a simple two-button starter rebuild.
For more information... click here!