4UAD 4UANTUM MAGNUS PRO 2011 PRECISION TDC HOP UP CHAMBER (Hi-Capa/1911) PK280 The stock XtremeDuty AR-15 comes

The stock XtremeDuty AR-15 comes with the Modify Flat hop up bucking which is known for stablizing the hopper and improve the accuracy when using heavy BBs 0

Empty Mag Detection and functional bolt catch when using Wolverine Airsoft magazines

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Let us show you the most feature packed hop-up ever made

4UAD 4UANTUM MAGNUS PRO 2011 PRECISION TDC HOP UP CHAMBER (Hi-Capa/1911) PK280 The stock XtremeDuty AR-15 comesMAGNUS PRO 2011 PRECISION TDC HOP CHAMBER (Hi Capa 1911 GBBs) Machined from solid 7075 aluminum billet, The MagnusPro 2011 Hop Up chamber uses a true vertical TDC (Top Dead Center) movement. Which means regardless of your hop up setting, the pressure point remains in the same position for consistent results. Featuring over 4 patented designs, the MagnusPro 2011 unlocks your GBB pistols potential with adjustable pitch & yaw for perfect barrel