ULTRA PRECISION HOPUP CHAMBER SRG FOR SRS/HTIA highest quality Hop Up chamber intended for tuning of SRS HTI sniper rifle replicas. Rotary chambers by Maxx Model Products are dedicated for the most demanding of players and offer an unparalleled thus far on the market quality of finish as well as perfect operation of the HU system in a replica. Specification: precisely made from a block of aerospace aluminum using CNC technology assured compatibility and air tightness with SRS HTI carbine