The 
LCT LK008 LK-33 Plastic Fixed Stock Set (BK)
 is an airsoft stock designed as a direct replacement part for the LCT LK-33 series of Airsoft Electric Guns (AEGs). It is made from a combination of nylon polymer and steel components. 
 
Product Specifications
Material: The stock is constructed from durable nylon polymer and steel.
Weight: It has a net weight of approximately 413g (0.413 kg).
Length: The length of the stock is 285 mm.
Color: The color is black.
Compatibility: It is specifically designed for use with the LCT LK-33 series of AEG rifles. LCT states they cannot guarantee compatibility with non-LCT products.
Included Components: The set includes a butt pad and a pin for installation.
Reviews: User reviews indicate it is a very sturdy stock with little to no wobble when installed on an LCT LK-33, but it is not capable of fitting onto an MP5 without extensive modification.
Battery Space: The fixed stock provides ample space for a larger battery compared to some retractable stock options.