Retro Arms CNC Hop Up Chamber AK receiver sets The tension of the spring

The tension of the spring can be adjusted to further fine tune your results

This O ring has superior properties to the standard material O rings that come with most piston heads

This motor will draw less amps to do the same work

rearview mirrors

Extremely Crisp Semi Response

Retro Arms CNC Hop Up Chamber AK receiver sets The tension of the springThis is the newest Hop Chanber for AK from Retro Arms They changed their drill depth allowing the use of 20. 1 mm nozzles This Precision Hop Chamber will increase accuracy and consistency for your AK AEG platform Included 1pcs Hop Up chamber for AK (anodized, made from aircraft dural EN AW 7075) 1pcs Setting lever (anodized, made from aircraft dural EN AW 7075) 1pcs Pushing lever with cut for common spacers(anodized, made from aircraft dural EN AW