Yes it is, its a 2.5 ft in length, i am going to order a 5ft one as well later on. The weight is a little heavier than i thought, especially with the camera head. I ordered the parts last thursday and got them on tuesday with standard shipping.
If you check out the rails these guys use, it might be worth to order that rail. I saw it some where in the catalog but didnt think anything of it. Only issue might be mounting to a tripod.
But for the $130 of parts and $125 for the new 701 i am getting its still cheaper than buying on for the same product.
Might have my buddy make me some swing out legs too.
By the way, drilling though the carriage was not fun. Definitly by a new drill bit or two.