Type II Handguard with "A" stamped on Underside

[Milwroad]

I have a very nice 2 rivet early handguard with the wide sight groove but the only stamping I can find on it is an "A" stamped in the barrel groove on the underside about 2 inches from the metal insert that the rivets are in. Any idea on the manufacturer? It has the cutout for the op rod.

Information

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[Bubba-7]

Winchester

[Milwroad]

Here are 2 pics. Sight groove is 3/4 inch wide.

[Bubba-7]

No it does not have the Winchester circles on the cutout. So it may not be Winchester. I have seen that A before, just don't recall.