Home / Accessory-Stocks / Heckler and Koch (HK USA) FOLDING STOCK SP5K BLACK View cart “SIG SAUER MPX STOCK ADAPTER ASSEMBLY” has been added to your cart. Sale! Heckler and Koch (HK USA) FOLDING STOCK SP5K BLACK$43899 Original price was: $43899.$38167Current price is: $38167. In stock Heckler and Koch (HK USA) FOLDING STOCK SP5K BLACK quantity Add to cart SKU: 261249 Category: Accessory-Stocks Product ID: 60296 Description Description All NFA Rules Apply Related products Sale! Heckler and Koch (HK USA) VP9 MATCH OR LONG SLIDE $59999 Original price was: $59999.$52266Current price is: $52266. Sale! SIG SAUER MCX/MPX FOLD/TELE STOCK BLACK $24999 Original price was: $24999.$23223Current price is: $23223. Wilson Combat SUPERSTOC CARB BUTTSTOCK BLK $6195 Sale! B&T TELESCOPIC STOCK APC556/300 $71500 Original price was: $71500.$66848Current price is: $66848.