Cheap And Discounts Silent Piston Head For Airsoft AEG Version 2/3 Ver.2/3 AK47 AK74 AUG M4 M16 MP5 G3 M249 Gearboxes Shooting Hunting Accessories Wholesale. Buy Directly From Merchant YPB outdoor equipment Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.