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11/21/2004 6:32:47 PM EDT
Do I need to get a stock spacer for my fixed CAR stock? I will be doing a 9mm conversion soon and I just want to make sure everything is squared away. The RRA website says one is needed. I already have the 9mm buffer and extra power recoil spring. Any info would be helpful.
11/22/2004 3:53:44 AM EDT
[#1]
If you are using the short 9mm buffer and the carbine spring, then yes, you need to use the spacer.  It's there to make the internal length of your fixed stock the same as the collapsable stock.  If you don't want to use the spacer, you need to get the longer "fixed-stock" buffer and spring.

Using the short buffer and spring in a fixed stock (without the spacer) will result in damage to your rifle.
11/22/2004 8:29:38 AM EDT
[#2]
Use the existing parts in the tube if they are indeed A2 (rifle stuff),  no need to be putting "CAR" parts in a rifle length tube.  The 9mm buffer only wieghs .4oz more than the rifle buffer at 5.1oz.
11/22/2004 2:02:23 PM EDT
[#3]
You need to be careful with the fake CAR stocks!  Some have full length buffer tubes while some have carbine length buffer tubes...  

If THE INTERNAL hole of the buffer tube is rifle length and you have the rifle buffer and spring as SBR7_11 suggested, just use that.  If it uses a Carbine buffer and spring then I would use the 9mm buffer but you don't need the spacer...

Like Dedeye said...  Using the short buffer and spring in a fixed stock rifle length buffer tube (without the spacer) will result in damage to your rifle.

Problem is that there are two types of these stocks out there and depending on which you have affects the correct answer!
11/22/2004 4:55:12 PM EDT
[#4]
My lower is a Colt M4 Match Target with "fixed" collapsable stock. It is pinned in place. For my .223 setup I am using an LMT "H" buffer with a Wolff extra power recoil spring. So if I am understanding this correctly I only need the 9mm buffer, and I do not need a 9mm spring or stock spacer? Thanks for the info guys, I appreciate it.
11/22/2004 5:07:57 PM EDT
[#5]
CAR parts in CAR length tube.
- 2.9oz CAR buffer
- 3.8oz "H"
- 5.5oz "9mm" buffer
and other CAR style buffers




Rifle parts (A1/A2) in rifle length tube.
11/22/2004 6:02:16 PM EDT
[#6]
Thanks for the pics this makes sense now!
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