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|Number of cells||103|
|Discovered by||Mike Playle|
|Year of discovery||2013|
In July 2014 Martin Grant found a 60-glider synthesis for the one-barreled gun, which can be trivially turned into a two-barreled gun by removing two gliders. On May 20, 2019, Jeremy Tan reduced this to 52 gliders for the one-barreled gun and 50 for the two-barreled version.
- Mike Playle (May 9, 2013). "Re: What do you want out of (conway's) life this year?". Retrieved on October 22, 2014.
- "Re: Scratch Your Heads: Glider Synthesis of Bellman One" (July 11, 2014). Retrieved on October 22, 2014.
- Jeremy Tan (May 20, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums