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Aerotech enlarged aft closure

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r66astro

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I picked up a J420RM reload kit. It mentions "enlarged aft closure". The nozzle fits the standard aft closure. I am confused, I can not find any info on the enlarged aft closure on Aerotech website. Anyone here know anything about this?
Thanks Bill
Arcadia, Florida
 

DAllen

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As I recall, once upon a time the 38mm aft closures came in 2 different sizes and the smaller of which is no longer made and all reloads now work with the larger aft closure.
 

r66astro

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Thank you very much! Not confused now.
Bill
 

jimzcatz

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And if by chance you get a smaller one, just take a unibit and enlarge the hole.
 

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