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Old 09-11-2011, 05:44 AM   #2 (permalink)
MCB Member
Join Date: Jun 2006

Yes it can be done.
Yes it has been done
Its not too difficult.
1 plug holes that supply air to the barrel
2 reverse spring so it pushes the barrel closed
3 attach pump to the barrel
This is a simplified version but you get the idea.
The hardest part is stopping rollouts and double feeding
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