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Old 02-03-2009, 09:58 PM   #1 (permalink)
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Custom pump arm for Line SI Bushmaster?

Anyone ever seen or made one? I'm trying to figure out how best to make an under-barrel pump arm for my Bushmaster. Pictures or ideas would help a lot!
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Old 02-03-2009, 10:12 PM   #2 (permalink)
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Like the BOSS? That was a nelson-style pump with side bolt mounts, but an under-barrel pump.

Looking at it, it actually appears to be using a Line SI frame. However, its not obvious what is keeping the pump from swinging up and down?

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Old 02-03-2009, 10:21 PM   #3 (permalink)
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Nick is right, the Boss does use a Line SI frame with a guide rod sticking out to align the pump.
-Dan
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Old 02-03-2009, 10:22 PM   #4 (permalink)
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That's a new one to me. Thanks, but have you ever seen anything homemade? Either from pipe or maybe even wood?
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Old 02-03-2009, 10:31 PM   #5 (permalink)
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Quote:
Originally Posted by shaaban View Post
That's a new one to me. Thanks, but have you ever seen anything homemade? Either from pipe or maybe even wood?
I'm not sure I've ever seen a homemade one. Its a fair amount of work when you could just start with a under-cocker as a base (ie phantom, sl68, USI, etc).

Though honestly, I never liked the Sniper-3 that I owned. Under-barrel pumps feel more natural to me, so you would think it would be more common.

Dan, so there is just a simple rod drilled/pressed into the LineSI frame?
In that case, a simple autococker pump kit might be all you need to convert a Nelson over to under-pumping.

Ie find some way to attach the cocker guide rod to the trigger frame. Attach the pump, then pick up some cheap metal rods from the hardware store to connect?
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