Looking for suggestions on canada legal mechanical delayed blowback PCC's

AlphaCharlieDelta said:
The FX9 bolt is quite short, and the receiver is as well. Any recoil system that has a rod that protrudes, like the maxim, the JP, and the armaspec won't work on an FX9. It will get damaged by the bolt, or damage the firing pin. I contacted Freedom Ordnance to see if it was possible. And that's the similarity I was alluding to in the previous post. As it stands I am more than happy with my hydraulic system, so won't need to try and adapt one of the aforementioned systems to work. Now in the Raven...I'm intrigued to see if it works because it's bolt is the same length as an AR9 I believe.
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Ah, didn't know that about the FX9.

I made a hydraulic buffer for my JR Carbine out of a cheap-o hydraulic buffer I bought on AliExpress. Made a couple of sleeves for the outside of it out of different materials to control the weight. It actually works pretty slick, lol.
 
FarmerDanz said:
Post a link Scotty! I'd take a run at making something like that.
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So I actually did, but for some reason the forum no longer underlines hyperlinks... Click on "cheap-o hydraulic buffer I bought on AliExpress" up there. Or here? Will it copy and paste the text with the link? Whoooo knows.

I bought the AC2030 I think? Probably wanna do some measuring before you buy, make sure the bolt can open all the way and all that.
 
Hah I feel like an old man for missing that. Interesting maybe I'll try it. Gonna look again tonight after something to drink and maybe I will hit Buy now.
 
adamturbo said:
The Raven9 uses a propiertary bolt carrier (i.e. not AR-9 compatible)
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CMMG's RDB is a locked rotating bolt system with matched bolt and barrel, the raven's bolts (not carrier) appear interchangeable with AR bolts. A mid length raven fixed ejector lower that takes Glock mags would make this more reliable than the conversion mag systems for STANAG style magwells. The CMMG is very different from the AR-9 style systems and only available in restricted lengths.
 
Ex3dy said:
CMMG's RDB is a locked rotating bolt system with matched bolt and barrel, the raven's bolts (not carrier) appear interchangeable with AR bolts. A mid length raven fixed ejector lower that takes Glock mags would make this more reliable than the conversion mag systems for STANAG style magwells. The CMMG is very different from the AR-9 style systems and only available in restricted lengths.
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The Raven9 ejector is fixed on the upper receiver, and there's a slot milled on the carrier/bolt to pass over it. It's not fixed in the lower like in the AR9 variants. Casually looking at my Raven and the CMMG drop in just doesn't seem do-able, at least not without additional machining.
 
adamturbo said:
The Raven9 ejector is fixed on the upper receiver, and there's a slot milled on the carrier/bolt to pass over it. It's not fixed in the lower like in the AR9 variants. Casually looking at my Raven and the CMMG drop in just doesn't seem do-able, at least not without additional machining.
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I could be wrong but the "short upper" does not appear compatible with rotating bolt systems, it looks like it would need to be the midlength upper with a cmmg bolt swapped into the proprietary 5.56 bolt carrier complete with cam pin and no ejector on the upper.
 
Just a heads up to all you FX-9 owners........"DO NOT USE A JP SILENT SPRING OR ARMASPEC RECOIL BUFFER IN YOUR FX-9!!"..
My son in law put the JP Silent spring that he used in his AR15 into his fx9 and it shot great and eliminated the cheese grater spring noise, But this is the result in under 500 rnds.
Obviously there was too much forward force on the bold and upper to do this much damage.
Pics of mine beside his to show comparison........

Good news is the stripped upper in only $50 US to replace.
I guess we should have researched it a bit more before installing it, lol.



 
john442 said:
Just a heads up to all you FX-9 owners........"DO NOT USE A JP SILENT SPRING OR ARMASPEC RECOIL BUFFER IN YOUR FX-9!!"..
My son in law put the JP Silent spring that he used in his AR15 into his fx9 and it shot great and eliminated the cheese grater spring noise, But this is the result in under 500 rnds.
Obviously there was too much forward force on the bold and upper to do this much damage.
Pics of mine beside his to show comparison........

Good news is the stripped upper in only $50 US to replace.
I guess we should have researched it a bit more before installing it, lol.



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"The FX9 bolt is quite short, and the receiver is as well. Any recoil system that has a rod that protrudes, like the maxim, the JP, and the armaspec won't work on an FX9. It will get damaged by the bolt, or damage the firing pin."
-from a previous post above on page one (we can now add upper damage to the list as well)
To get rid of the spring noise get a flat wire spring and use some white grease on it in the buffer tube. Poof, gone!
 
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Big bore dinosaur said:
To bad , terrible pics.. geeshh. To bad the dont have removable weights or tungsten inserts. ... .
Could tune your own cyclic rate with bolt weight
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You can tune the cyclical rate on an FX9...just not with those types of systems. You can go with a 10-11oz buffer, a heavier spring, a hydraulic system, a sheer roller delay system, the MBX air cushion system... Just not a captured rod style.
There is no pcc system that you can "add weight to the bolt" in Canada that I know of, except maybe adding more tungsten to the factory holes in the Ruger PC Carbine tungsten weight block (but she beefy enough already). But there are folks taking weight off their raven bolts to make the rod style systems work, the Raven bolt is really long and solid at the end and folks are drilling them out (apparently it helps mitigate the firing pin breakage issue as well...not proven tho)
 
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