Hal: The Std Model weighed a nominal 68-70 lbs, depending on wood density of the oak or ash butcher-block top. The all-alloy BR PIvot Lite weighed right at 50 lbs complete.
When in production, all alloy components were supplied by a Boeing Aircraft castings supplier prior to final machining. The "replacement" benches from Caldwell have an all-steel lower assembly, greatly adding to the overall weight. Seems the Chinese cannot produce porosity-free alloy castings of decent quality to use in any rendition of a 'new' Lite model, hence only the new Standard model being produced, which is a combination of steel and some limited use of alloy.
Despite all this, there is a waiting list/backorder on the BR Pivot at this time. The 'new ' BRP is just as stable in the field, just heavier than the originals.
Sidebar: As for the comments about an attached seat, valid point to be certain, but I'll add that many 1,000+ yard shots have been made from both models of the BRP. The shooters own weight preloads the bench, rendering it rock-stable. I also remember at least two 600 yard santioned BR matches in Seattle that Pete Forras won shooting off a BRP while all the other competitors were shooting from the cement benches at the subject range.
The day shown below near Havre, MT a few yars ago resulted in me connecting with an unlucky dog at a lasered 841 yds using my Holland-built M700 V-Block .243 Ackley (McMillan/Pac-Nor/Jewell/Leupold) shooting Nosler 70gr BT's at 3,800 fps. With, mind you, the dreaded attached seat.
Case closed IMO.