P52 gun

p52 gun may refer to:

• the original 308 × 298 period-52 glider gun
• the smaller 126 × 97 p13-assisted period-52 glider gun
• the even smaller (& formerly most optimal) 70 × 69 pseudo-period gun based on the B-52 bomber
• the smallest (and current optimal outright) form 33 × 26 period-52 glider gun (under subheader "current form") - this is the 2-glider octomino hassler

Note that the the current record-holder's sub-page - the Herschel-free mechanisms section - also contains briefly-optimal guns with distinct mechanisms and bounding boxes of 76 × 73 (using the HC0 reaction) and 45 × 31 (a Honey Farm Hassler).