INTERNAL UPGRADE
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Standard Cylinder Set
Model#: MB-UCS-S -
Ultimate Tight Bore Barrel - MP5 / AK Beta
Model#: MB-UT -
Barrel Nut for Daniel Defense MFR-Fit regular AEG and GNP
Model#: DD-BN-MFR -
Madbull DD rail adapter for ICS
Model#: DD-KIT-L85
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Standard Cylinder Set For SIG-551
Model#: MB-UCS-S-16 -
Standard Cylinder Set For SIG-550
Model#: MB-UCS-S-15 -
Standard Cylinder Set For SIG-552
Model#: MB-UCS-S-17 -
Standard Cylinder Set For MP5-K/PDW
Model#: MB-UCS-S-13
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Standard Cylinder Set For MC51
Model#: MB-UCS-S-11 -
Standard Cylinder Set For M733
Model#: MB-UCS-S-06 -
Standard Cylinder Set For M16A2
Model#: MB-UCS-S-04 -
Standard Cylinder Set For MP5-A4/A5/SD5/SD6/Navy
Model#: MB-UCS-S-07
