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This FGC9 MKII upper has been modified to fit AR9 barrels, and to accept both MKI and MKII style charging handles. A modified Stingray style retainer is provided, which clamps the AR barrel with 4x M4 grub screws to reduce barrel sag when thermal cycled. .STEP and .STL provided.
Check out FGCKits in the US for build and upgrade parts for a 100% maintainable FGC9 build with the highest quality parts.
Check out FGCKits in the US for build and upgrade parts for a 100% maintainable FGC9 build with the highest quality parts.