Housing part for auto-injector

Provided is a housing part for an auto-injector comprising a shell form body defining inner and outer shell surfaces and comprising a relatively hard or generally incompressible material; an over-coating formed of a relatively softer or more compressible material, the over-coating covering at least part of the outer shell surface of the shell form body; and at least one window defined in the shell form body, wherein the over-coating extends into the at least one window. Also provided is a housing comprising the housing part, and an auto-injector comprising the housing. 提供种用于自动注射器的壳体部分，该壳体部分包括壳形式的主体，该壳形式的主体界定内部壳表面和外部壳表面并包括相对硬或大致不可压缩的材料；由相对较软或更可压缩的材料形成的保护层，该保护层覆盖壳形式的主体的外部壳表面的至少部分；以及界定在壳形式的主体中的至少个窗，其中，该保护层延伸至该至少个窗中。还提供种壳体，其包括壳体部分以及包括该壳体的自动注射器。