FCW x KSC SSP STEYR GBB SMG Full Set
 
KSC STEYR SSP GBBR (Not System 7)
Comes with KSC STEYR TMP Silencer
FCW with Nylon Mount For TMP GBBR
Source: H134A / Top Gas
Magazine: 55rds Long Gas Magazine
You can choose to add the TMP Stock with a discount