PDW builds - Lets see them, and share results

Suputin said:
Well that would be a trade secret which is why they are paying me for it. :) Lets just say it took a bit of out of the box thinking to make it work properly.

They should be available for sale later this year.
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Fair enough, I can appreciate that. I look forward to seeing your ingenuity.
 
cnclaw said:
Here's my PWS at bottom, in 7.5" the comp works well to tame the blast much better than the old guard CAR15 at top.
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Beautiful looking! Unrelated but what have you got there for mounting pegs? Details please, I am just finishing my gun room and am looking for "peg mount" ideas.

Thanks!
 
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Stag upper, lower, LPK and FA bolt. I machined the 7.5" pistol length barrel from a 4150 blank and mounted LeVang linear comp / loudener. :D
The buffer is a custom piece. I machined the body from 304 stainless and then put three tungsten weights inside. It's too heavy for my scale, but SS is about 3X denser than Al.
She's gone through three 150 round range outings and hasn't had a cleaning or a hiccup. PMC 62gr, WWB 55gr, UMC 55gr and handloads. No issues.
Magpul MOE K grip is enroute. Ya, I'm a gearslut but for $20, I'll give it a try.
 
It's very effective at directing the blast forward. It's also supposed to provide a wee bit of backpressure to help with cycling. I'm not so sure about that.
I've had it out during dusk and it is a fireball machine, so I may try the PWS Diablo or machine something custom.
 
Craftsman 441 said:
It's very effective at directing the blast forward. It's also supposed to provide a wee bit of backpressure to help with cycling. I'm not so sure about that.
I've had it out during dusk and it is a fireball machine, so I may try the PWS Diablo or machine something custom.
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You may want to look at this.
http://youtu.be/JSW0b2a7OO4
 
It's very effective at directing the blast forward. It's also supposed to provide a wee bit of backpressure to help with cycling. I'm not so sure about that.
I've had it out during dusk and it is a fireball machine, so I may try the PWS Diablo or machine something custom.
Click to expand...

I think the suggestion that some brakes increase backpressure is a load of hooey. It is impossible to increase pressure when gas expands into a larger space. That is just basic Gas Law stuff but then I guess not everyone payed attention in school. :)

I vote for making something yourself. There is nothing like seeing your own design work and you never know what you may discover. Last week I tested a new brake design and discovered a flame thrower. :ar15: Thats not exactly great for .mil or tactical users but it might be fun for the range guys.

Worst case you could just copy someone else's design. :rolleyes:
 
Suputin said:
I think the suggestion that some brakes increase backpressure is a load of hooey. It is impossible to increase pressure when gas expands into a larger space. That is just basic Gas Law stuff but then I guess not everyone payed attention in school. :)
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(quoted by Suputin from another thread)
I run suppressed DI guns as short as 6.5" and they work just fine. The can actually improves reliability because it increases the backpressure.

First, you are saying that some muzzle devices don't increase back pressure.
Next, you are saying that a can (suppressor) increases back pressure.
Make up your mind. How much difference is there between a can and some muzzle devices, such as a Noveske KX3 or the Dlask version. (noise differences aside) They are both a contained area at the end of the barrel. Obviously the can is usually larger, but if a can increases back pressure it seems very plain to me that a KX3 could do the same albeit maybe not to the same extent.
 
A 'Can' redirects the gases, the gas doesn't shoot straight out the end of the muzzle device.

That is why adjustable gas systems are a good thing for a firearm with a 'Can'
 
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