Home / Accessory-Stocks / SIG SAUER MPX STOCK ADAPTER ASSEMBLY View cart “Heckler and Koch (HK USA) VP9SK/VP9SK-B OR SLIDE” has been added to your cart. Sale! SIG SAUER MPX STOCK ADAPTER ASSEMBLY$12999 Original price was: $12999.$12618Current price is: $12618. Out of stock SKU: ADAPTER-X-FOLD Category: Accessory-Stocks Product ID: 59100 Description Description Related products Sale! Heckler and Koch (HK USA) VP9 OR SLIDE WITH TALL SIGHTS $40500 Original price was: $40500.$35320Current price is: $35320. Wilson Combat SUPERSTOC CARB BUTTSTOCK BLK $5995 Sale! B&T TELESCOPIC STOCK HK SP5 $60000 Original price was: $60000.$55138Current price is: $55138. Sale! Heckler and Koch (HK USA) VP9 MATCH OR LONG SLIDE $54900 Original price was: $54900.$47490Current price is: $47490.