WMD GUNS AR-15 .22LR CONVERSION KIT w/ADAPTER •Machined from high-grade steel w/proprietary NiB-X (nickel boron) coating that reduces friction to the bare minimum & is impervious to corrosion & abrasion •NiB-X coating provides super-smooth harder-than-chrome surface & keeps carbon from adhering for faster easier clean-up •Includes (1) 25-round mag. & conversion bolt carrier group w/NiB-X coating •Clamshell packaged •Made in the USA
