The Mynock’s Den "HK” helmet cast is made from grey-coloured Smooth-Cast 65D resin with a black ONYX interior. Helmet is made using a two-part mold, which leaves a seam along the middle (see photos) which will need to be sanded and filled prior to painting. 
 
Some assembly required (superglue recommended, not included).
 
NOTE: this helmet is intended for cosplay or display purposes only. It has no safety rating, and is not designed for impact sports like airsoft, paintball, or to be used as personal protection of any kind.