FCW SIG MCX Virtus FULL CUSTOM GBBR Perfect Version 
 
APFG MCX GBBR Base 
Correct Gas Block Position 
Coming with SIG Style Retractable Stock
Full Marking Support By FCW
FCW Forward Assist Be Assembled
FCW Extended Gas Block Kit Be Assembled  
FCW Forward Asisit Be Assembled 
Gas Source: H134a (8kgs) And Toy Gas (12kgs)
30rds 6MM GBB Magazine