Items Available For Purchase Today Object reference not set to an instance of an object. See All POF USA gas piston upper system. P415, 18" P12SX For Sale from: Powderhorn ( FFL) | Positive feedback: 96% View | | 429 Completed Sales View Sellers Items POF USA gas piston upper system. P415, 18" P12SX For Sale from: Powderhorn | Positive feedback: 96% View | | 429 Completed Sales View Sellers Items Powderhorn Seller Since: Apr. 2002 Identity Verified ( Williston, VT ) This seller is an FFL City: Williston State: VT SOLD - $1,325.00 Shipping: $30.00 (or Arrange local transfer) Accepted Payment Methods: Returns: No Returns Description: For sale is a POF gas piston upper, model P415 18 -p12X-cf223. Check out details at POF's website. Finnish is all black with corrosion resistant operating system C.R.O.S. Condition: New In Box Item #: 907069938 Location: VT Trades Accepted: Share: Shipping Notes: See Description Items You've Viewed Recently POF USA gas piston upper system. P415, ... $1325.00 SELLER: Powderhorn (FFL Dealer) Add To Cart