This 5 sets high quality and precision magazine valve O-ring are made in Japan. O-rings of the valve body should be replaced during routine maintenance in order to keep gas-tight condition in magazine.

This optic mount is made by precision CNC machines and has matt black hardcoat-anodized finishing. It fits Marui MP5, but it does not fit other brand's MP5 that has wider mount base (e.g. more than 26mm wide). This mount has short Picatinny rail.

This steel sear is made by precision CNC machines. It is specially made for professional shooter and competition needs because the sear is modified for:
1) increases efficiency and reliability in holding the hammer;
2) smooths rotational movement and re

This enhanced recoil spring supplies 150% recoil power to the HK45(Umarex). While it increases the recoil speed of HK45, it also keeps the loading nozzle perfectly seal up the gasket of the magazine. The high quality steel piano wire has oustanding dura

This 6063 aluminum loading nozzle is manufactured by precision CNC process with electroplating finishing. The floating valve (i.e. jet valve) is made of 304 stainless steel. It is specially made for professional CQB shooter and competition needs because:

This high tensile steel enhanced full-auto sear is made by precision CNC machines. It fits Glock 18C GBB pistol of T.Marui. This steel sear is an enhancement item which has difference dimension from the original T.Marui dimension. It is specially made for

This hardened steel hammer is made by precision CNC machines.  It only fits T.Marui fixed slide version MK23 pistol. It is an enhancement item, which is specially made for professional shooter and competition needs, because:

1) High precision dimension

This hardened steel hammer is made by precision CNC machines. It fits T.Marui Glock18C GBB pistol. Both original T.Marui Glock18C rotor and our CNC steel enhanced rotor (#3385) can be used. This is an enhancement item and is specially made for professiona