r/AR9

Hello, I am about to purchase my first 9mm suppressor and I’ve been going back and forth between these (YHM R9, HUX Flow 9K TI, Exigent Defense Pointman 9, Ridgeback defense Mamba 9) but really thinking on getting the flow 9k ti since I want less gas to my face.

For anyone that has shot multiple of these what is the REAL difference since I’ve watched multiple videos but everyone says kind of a different thing.
•How much louder is the flow 9k compared to the R9?
•Is there a difference on sound and back pressure in the pointman to the flow 9?
•Should I just wait for the mamba 9 to come out
•Is there a better option in the $500-$800 price point?

The suppressor will mainly be on a 7” foxtrot Mike 9 thank you.

I dont track round count, but i have had this buffer in for a couple years, atleast several hundred rounds through the gun with this buffer in there

I have maybe 400 rounds of frt usage on the gun since I installed an arc fire a couple months ago

Any suggestions for a replacement?

Edit: just to clarify, the 400 rounds is just since I put the frt in a couple months ago, ive got probably 1200-1800(rough guesstimate) rounds through the gun with this buffer in there

Search for firing pin replacement spring substitutes for the LEE springs is not going well. I bought 10 packs of UXCELL springs from Amazon - all 6mm diameter to get the strength needed in the size required.

UXCELL 0.7mm wire/6mm OD/25mm L (green) appears to fit and have the right strength for a Lee Springs XP replacement in SOME bolts. Outerwild bolts should fit (KVP/Faxon/Angstadt/BKings/OutdoorSportsUSA/White Label Armory), Alpha SS should fit, Aero Precision should fit. NO GUARANTEES! PSA G4 does NOT fit, IDL does NOT fit.

UXCELL 0.8mm wire/6mm OD/25mm L (red) is very strong - it may be too strong.

#I have NOT tested them live fire. u/LouisMax2012 reports that the 0.7mm (green line in the chart) may be too strong and result in light strikes.

The 0.6mm may be the thickest wire that will work at 6mm OD.

FM bolts already come with an XP spring now, but the Lee spring is the only option for folks with pre-XP spring bolts unless we find a different option. 6mm springs do not fit. I'll keep looking.

ETA:

I just ordered the following to try them out when they come in...

• 0.6mm X 5mm X 20mm

• 0.6mm X 5mm X 25mm

• 0.7mm X 5mm X 20mm

• 0.7mm X 5mm X 25mm

• 0.8mm X 5mm X 20mm

• 0.8mm X 5mm X 25mm

0.8mm is the largest wire thickness for 5mm OD springs I can find on Amazon. This will be the last spring order from Amazon.

Now would be a good time to remind people that I have a BuyMeACoffee link on Blowback9.com to help me pay for all this testing... :-)

Marked “SU” on the back of this brace. I think I want to replace it…not thrilled with it.

Having trouble removing it. The usual “pull the lever down and slide back” doesn’t work. If anyone has experience with this, your suggestions would be helpful!

What am I missing? (Sling not pictured)

Got scared, came home to take pics on the closet floor. One star, would not recommend. My guns got dirty, I sweated (ick!!!) and…I used up some ammo.
Big shout out to Bone Frog Ammo. I ran through 500 rounds of their 77 gr OTM and it ran flawlessly in the 14.5, keeping groups to about the size of the palm of my hand out to 200 yards (with the AimPoint and an astigmatism).

I live in one of the country in Asia that allows ownership to private citizen. The Philippines.

Parts are ridiculously marked up by brick and mortar stores due to "taxes". They are hard to find and import. And did I mention expensive especially when shipped "legally" (wink wink).

Any who thanks to Doug (Blowback9) helpful research and relentless RND to taming the AR9, I was able to pitched together a Gentle Recoil System running a Kynshot RB5000 + 1 Tungsten Spacer (weigh 4.37 oz) + Strike Industries Flatwire Spring on a standard AR15 carbine buffer tube. Total mass weight including my bolt is at 22.48 oz.Yes you read it right. That Tungsten Spacer really added the needed mass for cycle reliability.

I had been running it on a locally made AR9 barrel + Upper and Lower with glock magazine and a MBX Pro Barrel on a guntec AR9 upper. So far 300 rounds and it runs smooth as butter.

I know you're wondering why did I do this? RB5000 is lighter compared to RB5000HP. RB5000 is not part of the GRS. Why not run the RB5000HP? Diameter. Like I mentioned I live in the Philippines. Finding a Flatwire Spring that will fit the RB5000HP is hard and impossible. Local stores only carry Strike Industries FWS. I had run the RB5000HP + my Tungsten spacer with a standard AR9 Round Spring but encounter FTF issues. So I bit the bullet and decided to run the RB5000 instead.

I want to thank Doug for his online guidance. You rock AR9 God!

Internal extractor bolt (don't know the brand)

LevAR charging handle

KEArms AR9 upper

Novox X-SD barrel

HBI AR9 PCC Suppressor ready handguard (6")

Blasphemy HUB to protect the threads until my wallet recovers enough to snag a Milkman

CMMG RDB (Non-FE)
5” CMMG RDB Barrel
Kynshot 5007
AS Designs Arc Fire
CAT Mob

I managed to get a BA 5.5" barrel for $25 shipped, the upper receiver for $40 and the handguard for $25. The lower and bolt are borrowed from my 635 build, the rest of the parts were spares. I'm eventually planning on getting a Colt mag adapter for a spare SBRed lower and the Odin works H-FRT-9 so I can Super Safety it alongside a dedicated BCG.