I've heard that HRA apertures have a curved radius in front of the peep,similar to WRA,but with tracks underneath.Is this true? If not ,how do I tell the difference between HRA and post war SA?
TIA,Marty
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I've heard that HRA apertures have a curved radius in front of the peep,similar to WRA,but with tracks underneath.Is this true? If not ,how do I tell the difference between HRA and post war SA?
TIA,Marty