The BECC - Breech-loaded Electro-pneumatic Constant-air Cannon. After running through several variations, this is the latest version of the BECC, with a new PMI Trracer grip frame, T-section connectors, and new paint. Neild developed this breech loading system several years ago, and at the time it was the only one of it's kind (as far as we could locate anywhere), where before loading was accomplished down the muzzle on most air cannons. A 5 second video of the cannon firing is available on the BECC page.