Chassis for all Howa 1500 LA systems for barrels up to 1 inch in diameter. Almost all AR 15 grips and all collapsible AR 15 stocks can be mounted. However, fixed shoulder rests can also be mounted with an adapter. The magazine bay accommodates all AICS compatible magazines. The mounting holes on the underside of the forearm are prepared for Picatinny rails in Magpul design L5 ( 11 grooves ) and L3 ( 7 grooves ) with a maximum length of 6.5 inches. All MDT Picatinny rails correspond to this dimension and can be easily mounted by already existing threads. It is also possible to install a folding stem joint. All necessary screws for the system and the handle are included. This means that the system also has room in compact transport containers. This allows them to configure their ultra-compact stock system just the way they want it.