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My Ls Brass Breech Version


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#1 popatachi

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Posted 23 February 2010 - 10:55 PM

This is my brass breech. I didn't have enough brass for an angel, so here's what I got. (I'm repeating the text that is in the picture)

This uses 1/2" brass nested into the bolt and secured with epoxy and goop. Inside of that, I wedged a piece of 1/2" to act as a dart tooth. This was done to prevent jams when loading darts into the firing barrel. I don't have the length of the 1/2" brass but it sticks out about 3/4" from the stock bolt (not quite half way on a clip). A cut down pen cap was used to secure the tooth and keep it secure. (The pen was the uni-ball vision line)

The firing barrel is 17/32" brass with tightening rings and is 9" in length. I've coned out the barrel slightly to act as a guide if the bolt is slightly off.

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The completed bolt
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The firing barrel
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Assembly with a clip
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This is air tight and once I actually put in a [k26] + LS spring combo, it's breaking cardboard.

Ranges: Averaged 85ft with single BB stefans

Edited by popatachi, 08 March 2010 - 05:03 PM.

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#2 Liam

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Posted 23 February 2010 - 11:21 PM

Very, very, nice. I love the pen cap idea.
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#3 NerfKnack

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Posted 24 February 2010 - 12:25 AM

i have the brass, just no ls.
nice job tho.
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#4 JATDO

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Posted 24 February 2010 - 03:12 PM

This is a really good idea. I'm pretty sure the angel breech uses 9/16, I like how this uses 17/32 mainly because thats the size of brass I use as my main barrel. And its perfectly air tight because the 1/2 makes a seal with the 17/32 right?
And this is alot less brass.
Nice write up too!
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#5 magnesium22

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Posted 24 February 2010 - 03:53 PM

nerfknack:
I have a similar problem to yours,but I have the ls, but no brass. :P
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#6 popatachi

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Posted 25 February 2010 - 01:36 PM

@JATDO: Yes, 1/2" to 17/32" makes an air tight seal. I used the smaller size since that's what fits my darts.

@nerfknack & magnesium22: Have a duel, winner gets the LS and brass.
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#7 canuck

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Posted 25 February 2010 - 07:40 PM

Did you have to sand down the inside of the stock breach? I am suprised it jsut fit in there.
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#8 Hi Yah

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Posted 25 February 2010 - 10:22 PM

This is a really good idea. I'm pretty sure the angel breech uses 9/16, I like how this uses 17/32 mainly because thats the size of brass I use as my main barrel. And its perfectly air tight because the 1/2 makes a seal with the 17/32 right?
And this is alot less brass.
Nice write up too!


You know that can make an angel breech with 17/32, right? Just size down all the brass.
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#9 HOTH

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Posted 26 February 2010 - 12:53 AM

Hot damn, that's a nice breech. Very clean. Sexy.
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#10 popatachi

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Posted 26 February 2010 - 08:30 AM

@canuck: Sorry, I don't remember. If there was sanding, it was minimal, but I believe 1/2" brass will fit well once the AR is removed.

@Hi Yah!: I've seen a couple posts/videos where people made an 17/32" Angel breech, though I can't remember who.

@HOTH: Thanks!
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#11 hawkshot

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Posted 26 February 2010 - 11:36 AM

I believe Coop has made several 17/32 angel breeches.


Nice breech. Very clean. I like the pen cap idea.
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#12 umpshaplapa

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Posted 28 February 2010 - 10:40 PM

This is a really good idea. I'm pretty sure the angel breech uses 9/16, I like how this uses 17/32 mainly because thats the size of brass I use as my main barrel. And its perfectly air tight because the 1/2 makes a seal with the 17/32 right?
And this is alot less brass.
Nice write up too!


You know that can make an angel breech with 17/32, right? Just size down all the brass.

What would be the point? This has the same end result but uses way less brass.

Great Idea.
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