win37MPN: WIN37-20-FP Vendor: Featured Products. STI Staccato XC 9mm Optics Ready CS Frame DLC C... (5) $4,299.00 Add to Cart Sale! Rock River LAR-15 Entry TacticalWIN37 by Winfield. Item#: 242571. Pattern Code: WINWIN37. Description: Solid Yellow, Coupe. Pattern: WIN37 by Winfield. Status: Discontinued.