PSG1 Buttstock Cheek Rest Adjustment Knob$7500 SKU: PSGKNB-1 Categories: MP5 & 90 Series, Services - HK PSG-1, Services HK 91 93 G3 33 53 90 Tags: MSG90, PSG1 Product ID: 7527 Knob only, made to order PSG1 Buttstock Cheek Rest Adjustment Knob quantity Add to cart Description Additional information Description Knob only, made to order Additional information Weight 10 oz Dimensions 2 × 2 × 2 in Related products Sale! PSG1 Side Stiffening T-Rail Set $24900 Original price was: $24900.$19900Current price is: $19900. Out of stock HK PSG1 MSG90 #30T Locking Piece $24900 Out of stock Weldable Picatinny 1913 8″ Weldment Rail For HK MP5 Etc $5900 Sale! HK Sling For UMP G36 SL8 USC Etc Open Bag $3500 Original price was: $3500.$2900Current price is: $2900.