Archwick B&T Air APC9K Pro GBB SMG PK52 A rotary wheel is used

A rotary wheel is used for winding

Adjustable spring tension to accommodate mounting on uneven surfaces and varying gun power levels

Magnification: 4x

Inner Barrel Length: 275mm

Based on the high performance mid-cap Enhanced Polymer Magazine (EMP) from PTS but now with MTW-Spec empty-mag detection

Archwick B&T Air APC9K Pro GBB SMG PK52 A rotary wheel is usedFeatures Officially licensed B&T APC9K Fully engraved markings to match the real thing Precision CNC machined 6061 T6 aluminum upper receiver, handguard, & bolt. Upper receiver finished in a milspec type III hard anodized finish CNC machined S45C steel internals Ultra durable steel outer barrel with tri lug flash hider TDC direct pressure hop up unit with Tokyo Marui MWS spec bucking 1913 Picatinny handguard rails at 3, 6, & 9 o'clock Full length top