Alpha Parts M150 Cylinder Set for Systema Over 10.5" Inner Barrel PTW M4 (Red) Net-Weight-(g)_162 Short Railed Handguard with SAI

Short Railed Handguard with SAI QD System (Gray) (COP123S)

Custom FCU board has empty magazine detection feature

Systema Internal Sector Gear for PTW

Design For Upgrade the Original Grip Safety More Durable

Alpha Parts M150 Cylinder Set for Systema Over 10.5" Inner Barrel PTW M4 (Red) Net-Weight-(g)_162 Short Railed Handguard with SAIAlpha Parts M150 Cylinder Set for Systema Over 10. 5" Inner Barrel PTW M4 (Red) SUS304 Stainless Steel Construction M150 Power Up For the Systema Over 10. 5 Inch Inner Barrel PTW M4 Series. The stainless steel cylinders of the latest PTW EVOLUTION contains the same internal parts as the previous version of the PTW, Which means Ccomplete compatibility with existing PTW piston, cylinder head, springs, spring guide and all other parts