Builder's Blueprints Description Never bring a gun to a blueprint fight. Price Unique 1.33 - 1.44 Refined Uncraftable 30 Refined Strange 2.65 Keys Classes Engineer Tags Cosmetic Misc Blueprints Items Chance 2% Unique Vintage Strange Genuine Collector's Haunted Unusual Unique Vintage Strange Genuine Collector's Haunted Unusual $3.74