Home / Services - HK PSG-1 / HK MSG90 Adjustable Buttstock Factory New You cannot add "HK PSG1 Style Trunnion RCM" to the cart because the product is out of stock. HK MSG90 Adjustable Buttstock Factory New$1,59900 SKU: MSG90STK-1 Categories: MP5 & 90 Series, Services - HK PSG-1 Tags: HK91, MSG90, PSG1 Product ID: 7116 Brand new factory HK adjustable buttstock for the MSG90. Actual item shown. These are getting harder and harder to come by. This is our only one! Contact us if you have questions about builds or assembly. Product is out of stock Notify me when this product is back. Please enter a valid email! Subscribe Description Additional information Description Brand new factory HK adjustable buttstock for the MSG90. Actual item shown. These are getting harder and harder to come by. This is our only one! Contact us if you have questions about builds or assembly. Additional information Weight 21 oz Dimensions 9 × 5 × 1.5 in 922r Qualifying Part YES – Foreign Manufacturer HK Related products Out of stock Weldable Picatinny 1913 8″ Weldment Rail For HK MP5 Etc $5900 Out of stock Sale! HK MSG90 Factory Hard Case New Original From: $79900 $69900 HK PSG1/MSG90 Factory Hammer New Old Stock $29900 HK G3/91 EBO Greek Lower Housing 0 1 F For Semiauto $24900