Break Through Battle Born Grease Fortified with PTFE - 12cc Syringe Rubber The blowback performance is solid

The blowback performance is solid and quite impressive

G&P MOTS 4 Inch RAS for WA M4A1 GBB (Black)  Metal Construction  RAS Rail system  For G&P GBB Metal Body & WA M4A1 Series  Length: 102mm

M16A2 Steel Outer Barrel (GP758)

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Break Through Battle Born Grease Fortified with PTFE - 12cc Syringe Rubber The blowback performance is solidBattle Born Grease represents some of the most advanced lubricant technology. It is a versatile, premium quality, synthetic grease fortified with Sub Micron size PTFE. Blended completely with pure synthetic base oils, additives and shear stable thickeners to provide maximum firearm protection in extremely high and low temperatures (Operating Range 75 to +510F). Great for use on firearms, knives, fishing reels, and bows Wide temperature range Non