Bushmaster dissapator A2?
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Old 11-26-2011, 04:25 PM   #1
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Default Bushmaster dissapator A2?

Hey I'm new to non military weapons. I bought a bushmaster ar15 yesterday and it came with a collapsible butt stock. When I got home of course I was ready to put on and soon realized it would work because of the full length buffer spring tube. In order for me to put one on it am I going to have to replace the whole lower receiver? If so where would be the best place to get it?

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Old 11-26-2011, 04:35 PM   #2
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Lets try and clear this up a little.

The BM came w/ a collapsible stock but it wasn't already installed on the receiver extension?
Is it a collapsible mil-spec stock and extension or is it an A2 extension (does it have the slot on the bottom for the stock adjustment)?
Where did you purchase it?

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Old 11-26-2011, 06:25 PM   #3
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correct it came separate. once you take off original butt stock then the buffer extension is showing there are no slots on the bottom of it for the new stock to lock down on. also there is no way to make it shorter due to the length of the extension.

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Old 11-26-2011, 06:29 PM   #4
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and I bought from a guy that's friends with my brother.

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Old 11-26-2011, 07:22 PM   #5
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You will need an M4 extension, the one you have is for fixed stocks only.

You'll need this DSA, Inc. Mil-Spec. 6-Position Stock Kit or this Collapsible 6-Position AR Stock Tan (Commercial)

I'd go with the mil-spec version. Your stock is probably a commercial but the kit comes with one.

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Old 11-26-2011, 07:23 PM   #6
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You can use the lower receiver with a collapsible stock but it needs a new receiver extension, buffer and spring. Not a hard thing to do but you'll need (or borrow) a $7 stock wrench. It's probably best to buy a complete kit with matching slider as the slider you now have may not fit the RE you buy (they come in milspec and commercial diameters with milspec preferred).

But now's the time to figure out just what exactly do you have so get it out and shoot it before making changes. I'd leave the rifle stock now in A1 configuration since as you use it you may want a more modern flattop upper. If that's the case, there are people who do like the older design but wouldn't like it with a telescoping stock.

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Old 11-26-2011, 07:24 PM   #7
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Ah, you beat me again, MJ!

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Old 11-26-2011, 08:09 PM   #8
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thank you gentlemen very much

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