The GL-Core S CP version includes the GL-Core S stock and the GCCP Cheek Rest, designed to support the use of different optics and holographic sights on the AK and VZ platforms.The design process started with the GL-Core buttstock, and implemented all the design changes that were requested to create a buttstock that will be short and compact for CQB scenarios but will still provide strength and stability for mid-range engagements. Compatible with AK, VZ and shotgun platforms, on the AR platform, the CP may obstruct the use of the charging handle when the buttstock is fully collapsed, for use with an AR platform, we recommend removing the CP.