Interesting problem - pistol length gas block on midlength rail?

[CJ]

I wonder if it has to do with the lower volume of gas forced into the port and the additional mass of the piston.

It's a higher volume of gas, but less pressure. The pressure curve is different, so you have to mess with it more apparently.

[bottlerocket]

if anyone is sticking w/ DI system, a new option is about to be released

http://www.ar15.com/forums/t_1_5/1277745_PALMETTO_STATE_ARMORY__MAJOR_SHOT_SHOW_2012_ANNOUNCEMENT.html

adj gas @ upper location
looks interesting

Looks promising! I might have to pick one of those up for my build.

And CJ, thats a badass rail setup. Looks damn near custom built to solve your problem. How does the handguard attach together? In the 4th pic it looks like its being held together by a rail segment, but in the 3rd it looks seamless. Different setups or do they actually attach in a different way?

[ThreeFingerPete]

I wonder if it has to do with the lower volume of gas forced into the port and the additional mass of the piston.

[CJ]

Have you asked Adams Arms of they are working a .300blk kit?

Sent from my SAMSUNG-SGH-I727 using Tapatalk

Yep, they said no they are not, and no they don't plan on it.

[KBScobravert]

There *seems* to be some difficulty getting the AA Piston kits to work on .300 BLK guns, but it's all hearsay, I haven't read anything confirmed.

Have you asked Adams Arms of they are working a .300blk kit?

Sent from my SAMSUNG-SGH-I727 using Tapatalk

[CJ]

There *seems* to be some difficulty getting the AA Piston kits to work on .300 BLK guns, but it's all hearsay, I haven't read anything confirmed.

[gat0r]

if anyone is sticking w/ DI system, a new option is about to be released

http://www.ar15.com/forums/t_1_5/1277745_PALMETTO_STATE_ARMORY__MAJOR_SHOT_SHOW_2012_ANNOUNCEMENT.html

adj gas @ upper location
looks interesting

[gat0r]

evo looks like a good solution

otherwise your 2 choices that i see are:
-modify a rail to utilize the piston system
-use DI gas system w/ low profile adjustable gas block

[Nash B.]

I don't really like the way most rails look and generally prefer a simple tube, but that's not all that bad.

[Gtracer]

Well, good news I suppose! I called Samson MFG because I honestly didn't understand wtf their evo rail did exactly. Their website is fairly confusing.

I spoke to Andrew up there and he was great. Apparently, all of their evo series rails have a gap for a piston setup. Then, you can extend the rail another 4" on front of that. Pretty damn cool!










Which means I could buy their pistol gas block rail, which is 4" of top rail, and 3" of side rail. Then add the 4" extension, and I have a complete rail with access to my piston block which measures 11" total. Meaning 2" of my suppressor will be inside the rail (and it's 1.65" ID so it will fit!), and 7" will be exposed. So that's awesome. The best part is their rails are pretty cheap ($165 for the rail I'm looking at). And their huge ID is awesome.

/Thread

[CJ]

Well, good news I suppose! I called Samson MFG because I honestly didn't understand wtf their evo rail did exactly. Their website is fairly confusing.

I spoke to Andrew up there and he was great. Apparently, all of their evo series rails have a gap for a piston setup. Then, you can extend the rail another 4" on front of that. Pretty damn cool!










Which means I could buy their pistol gas block rail, which is 4" of top rail, and 3" of side rail. Then add the 4" extension, and I have a complete rail with access to my piston block which measures 11" total. Meaning 2" of my suppressor will be inside the rail (and it's 1.65" ID so it will fit!), and 7" will be exposed. So that's awesome. The best part is their rails are pretty cheap ($165 for the rail I'm looking at). And their huge ID is awesome.

[bulldog896]

drill a hole across the pulg and then you can use a dog leged tool to get to the button and plug through the rail and use the tool to remove and install the plug

past that go back to an impingement system and use fail zero bolt and carrier that's what I'm doing with mine

[CJ]

Good luck getting the paperwork back by spring!

I filed it almost 2 months ago, should be fine.

[Nash B.]

Good luck getting the paperwork back by spring!

[CJ]

It seems you like to build guns to your liking which is great that you have the knowledge to do so. You should not be getting frustrated seeing as you are obviously treading in areas that not too many have.

Seems like maybe this gun will cost more than it is worth unless you plan on making the parts on your own. I am sure any machine shop will be able to build the tooling for you but it will cost you.

Meh, I know what I want to do so whatever means get me there. Fuck money, I'm already pretty damn deep in this thing already. Patience is key. Hopefully I'll have it done by spring in time for pig season.