For sale- DRE Barrel Pump. This is the "Shorty" version. Specs: Height 20in; Volume 157in²; Weight 6.5 lbs; Pump Efficiency 4:1; PSI 6.
Near-mint condition. Has been on one Main Salmon trip. Always stored in a drybox.
More detailed info can be found at:
These pumps cost $199 new. Selling for $100, buyer pays shipping.