I had a RF 300BLK upper. It leaked gas from the ill-fitted gas tube hole (where the gas tube goes into the gas block). It spewed goldish colored gas residue rearward, all over the barrel and inside the handguard. Functioned okay, but I then did some research and they were apparently known for this type of problem. I bought a BCM lo-pro gas block, had it pinned by ADCO, and sold the damn thing. I'll never buy RF again.
You get what you pay for as the old adage says.
11C2P '83-'87
Airborne Infantry
F**k China!
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