Caliber:.308 Win - Action: Delayed Blowback Roller-Lock System - Overall length: 40 � - Weight: 9.75 lb - Barrel: 18 match grade H&K profile tapered barrel - Magazine: 10rd - Stock: NRA rated GOOD + classic H&K OD green fixed stock - CA compliant models come with bullet button in place of paddle magazine release paddle mag release not shown in picture