We bought some of Serbu's 'Super Shorty' pump handles to install on our (The Original !) 'Shorty'. These were kicking around the shop for a bit until a regular customer asked if we could put one on his shotgun. No point doing just one so we did 5 to make a small batch. These just came back from bluing and they look fantastic ! Because we put them on our 'Shorty' which is an 8.5" barrel vs. Serbu's 6" barrel the pump does not cycle when closed. However....when it is in the deployed position it is just awesome !
A few pics of it on one of the shop's 870's :