Click to expand Tap to zoom Action Army AAP-01 Assassin Hop-Up Chamber Unit by Action Army Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $99.99 SKU U01-019 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Features Wheel Adjusted Hop-Up Chamber CNC Full Metal Construction Action Army Original Part for AAP-01 Drop-In Fit