The LA Capa Customs TDC Brass HopUp Unit is hands down the best on the market.  It has true top down control, can hop any weight BB, and provides superb range and accuracy compared to other units.  No other parts needed, this hopup unit is all you will ever need!

Features:

• True top down control
• 3x the adjustment range compared to the normal hopup system
• Can hop any weight BB 0.20-0.49
• Tool-less wheel adjustment
• Full CNC brass and steel construction
• FPS increase compared to the stock unit (7-10 in our testing)
• Optional 1911 insert post
• Set screw for frame alignment