If you own the S&W R8 airsoft revolver, then you need these Smith & Wesson M&P R8 revolver cartridge shells. They’re gold in color and there’s 8 to a package.
LA Innovations 88g CO2 Cartridges for Airsoft / Airgun (8 Pack) $57.99 
Envirosafe Airsoft Gun Refill Green Gas 13.5 fl oz 3 Piece $45.00 S&W M&P R8 AIRSOFT REVOLVER 6mm CASINGS 8-PACK
$14.99 
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