HealthKit AS 103a (AR3a?) Refoam guidance

That's not that bad - you can suck out the dust cap, and a neat (wide) smear of glue will cover the daubing.
And remember - early ARs (which had nailed on grills, so no one was supposed to see underneath) were completely industrial looking, and these would have looked like a good day's work in comparison. The construction was good, but the methods were very agricultural looking.
 
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