I have this left over PRI Free Float tube CAR Length Top Rail. It's meant to mount solidly to an Upper and then to the free float tube to tie everything together.
Also serves to raise the rail height by 1/2". The front could be cut off to create a forward mounted riser that clamps only to the upper.
Has some usage clamping marks where optics were mounted. 90% condition.
$65 + Actual USPS Shipping to your ConUS address.ETA - wasn't really looking for trades. But would consider Magpul CTR or PRS.
ETA 2 - SOLD to Lawdog.
Payment by USPS Money Order only. When payment arrives, item will ship within 24 hours via Priority Mail w/ Delivery Confirmation. I will immediately then send you the delivery confirmation number.