FN PS90/P90 M 1913 Rail USG Model Out of stock. Check back later... $164.99 MSRP Price: $149.00 Notify me when this item is back in stock (log in required) Description Details Reviews Shipping info For USG model. UPC: 818513002202Manufacturer: FN-HerstalModel: 3819400120Category: PartsOtherMisc AR-15 PartsStock: 0Unit/Measure: ea This item may be shipped directly to your home address, unless you live in a restricted state.