Masterpiece Arms Trinity Rail system. Designed to be used on any MPA chassis (MPA BA Chassis, MPA Comp Chassis, MPA BA Lite Chassis) to provide an alternate location for positioning a bipod or other picatinny rail attached item. It attaches to the bottom of the fore end of the chassis body via the 2 slots that run the full length of the bottom of the chassis.
This was accidentally shipped to me along with an item I purchased from another Hide member. He didn't want it back, so I'm giving it away for the cost of shipping ($7.20 to any US state). First publicly-posted "I'll take it" response gets it.
MSRP $59.99: https://www.tacticalworks.com/Trinity-Rail-System-by-MasterPiece-Arms.html
This was accidentally shipped to me along with an item I purchased from another Hide member. He didn't want it back, so I'm giving it away for the cost of shipping ($7.20 to any US state). First publicly-posted "I'll take it" response gets it.
MSRP $59.99: https://www.tacticalworks.com/Trinity-Rail-System-by-MasterPiece-Arms.html