I received an email from Rainer Arms yesterday saying…
“Lewis Machine & Tool has dropped the price of all Monolithic Rail Platform (MRP) on average of $200 in anticipation of the arrival of the piston systems.
Now is your chance to own an MRP at an incredible low price. CQBs now start at $1089”
Rainer Arms website has the 10.5" at $1089, the 14.5" & 16" are still $1289.
LMT’s website still lists retail.
Hey!!!..$200 savings pays for the Form #1
The $1289 price for the 14.5 and 16" barrels is for the rifle-length MRP, so it has also gone down $200. The 10.5 CQB is the only CQB-length MRP they have listed as being in stock.
got the same email…DD lite rails have gone down as well 
Just picked up my 10.5" from www.HarrisTacticalOnline.com The LMT CQB MRP is awesome! Need a Piston conversion now.