PTS Dead Air Sierra 5 Airsoft Tracer Unit with Xeno QD Mount PK165 while the piston head has

while the piston head has a ball bearing

-       Improved rifle balance and weight distribution

-  Compatibility – any airsoft gun with 14mm counter-clockwise barrel thread

we do our best to make every Airsoft gun perfect

Name: G&G STP45 Optic Mounting Plate

PTS Dead Air Sierra 5 Airsoft Tracer Unit with Xeno QD Mount PK165 while the piston head hasThe PTS Dead Air Sierra 5 mock suppressor or tracer unit is machined from 6061 aluminum and features a hard anodized finish. The knurling on the Sierra 5 body offers a distinctive appearance as well as superior grip for installing or removing the silencer onto a gun and the Sierra 5 includes the PTS Dead Air R series front endcap. The PTS Dead Air Sierra 5 has QD (quick detach) capability via the proprietary PTS Dead Air Xeno mounting system. The