Have my first 9mm build almost complete…I have everything together except have not picked up a buffer yet…i understand that there is a specific 9mm buffer…my questions is…does the standard carbine buffer spring work with the heavy 9mm buffer…the build is a 16 inch barrel, and on a CMMG lower…
thanks
I went with a Wolfe SMG spring with a Spikes 9mm buffer and I haven’t had any issues. I believe they offer 3 different types and I bought all 3 thinking I’d have to play with them to work on the various uppers I tend to shoot. Will you be shooting suppressed?
I have a QC10 setup, so I went with their recommendations - H2 buffer and Wolff Extra Power spring. I used six quarters as a buffer spacer because the Spikes spacer I had was way too long for my config.
thanks guys, it will not be suppressed…just a standard 16 inch gun…for plinking and such…the shooting club I belong to has a lot of matches where we can shoot pistol caliber carbine…that was my motivation for doing the build…
Steve
Had that same problem with a Spikes heavy buffer. It’s too long and didn’t allow the bolt to all the way back.
Seems like the Spikes AR9 stuff is very proprietary. I’m guessing that you have to use their BCG, buffer, and buffer spacer to make anything work right. Just to clarify, I myself used a standard carbine H2 buffer. Using quarters as spacers allows you to tune the rearward BCG travel to enable BHO and prevent bolt catch damage. Or so Arfcom told me.
thanks guys,
I went and ordered the RRA 9mm buffer…will see how that runs with a standard carbine buffer spring…I will order up the extra power Wolff spring if I have problems…
thanks again…
I have some extra parts of you need some help getting the correct set up running.
The best buffer for a 9 mm is the Qbuffer from heavy buffers.com carbine extension and no spacer
I wasn’t exactly sure considering all the internet experts, so I’m using a RRA Buffer Assembly and A Full Length Action Spring. That’s It. I put 350 rds through it and only had a few hiccups. Not sure if its the Magazines, Ammunition, or the new wearing off. I’m using a CMMG complete upper with the ramped bolt so also using a regular hammer. I’m also using Mobil 1 for lube. I bought The Stock Spacer, and made 2 different size / length Buffer Spacer’s. So far I’m not really seeing a need for all the extra stuff, but I have it. I mostly built this because I missed the chance to buy a used Colt years ago and regretted it ever since.
Can’t wait to see more of these builds popping up!!
Kind of an Update. I’m going to add one of my home made buffer spacers. I have been told it will make things better. I now have 700 rds through it and it works pretty good. So we shall see
What issues are you having?
My first part arrived today! A Spikes ST-9X 9mm heavy buffer. I have a Colt A1 9mm upper. A 16" Colt bbl and Delta ring is inbound from Brownells along with a Wolf extra power buffer spring. I still need to order the BCG and a lower.
I don’t have a scale handy or the actual weight. This feels about twice as heavy as a regular buffer.
Actually no issues. I did have a Trigger Pin break, but that could have been a weak part(it broke at the middle grove). It was suggested on another forum to put the spacer in to slow the bolt down more. This whole thing is just an interesting experiment. I ran roughly 200rds through it without anything but mag changes. Even the mags are running without issue now. I wanted something else that would shoot pistol caliber, and its ringing the gong at the range at 100yds…so I’m pretty happy.
Sounds like fun. The process has been interesting. Having a rifle and pistol that will take the same magazines will be great.
I’m not sure about the Magazine/'s. I have been told UZI mags, (modified) will work, but I am not aware of a pistol that uses these Magazines. My understanding is that this is based on the Colt 9mm AR15, not any type of Pistol.
If you do not yet have a Lower and you do have a Glock 9mm, this might interest you. https://newfrontierarmory.com/product-category/ar-9-lower-receivers/
Thanks. Looks good and I like their pricing. It’s all out of stock.
I have an utterly reliable Lone Wolf lower using Glock magazines. I also placed some quarters in the buffer tube. No detectable part issues at 5000 rounds.