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From TOS ... "buy the shit out of that thing, all the mil spec is just nonsense."
In my experience you don't need to change the buffer.
Push the takedown pins out, pull carbine upper off, put mid-length upper on, push the pins back in. Add ammo, shoot.
Got a chance to shoot it yet? It was a counter-intuitive answer (at least to me) to go to a slightly heavier buffer than a H-1 (the original buffer). But in this case, the bolt wasn't locking back as it was cycling too fast and skipping the catch with the 5.56 XM 193 Federal ammo. Slowing it down by using a heavier buffer allowed for the magazine to push the catch up sufficiently to allow the bolt to lock. A lighter buffer (car) only made the matter worse as it wouldn't lock back on any ammo, even the lower power 223. So after some more research, I went with the Spikes T-2 as it is lighter than an H-2, but heavier than a H-1. Reading numerous posts in a variety of forums showed that a large number of people were using the T-2 buffer with excellent results for their mid-lengths when using a large variety of different powered ammo.
It now functions flawlessly with a wide range of brass case ammo makes in both 223 and 5.56.
Last edited by Chorizo; 05-02-13 at 10:11.
USMC, 21 years and 21 days. But who was counting?
Nope, neither, just swap the uppers. You didn't mention the name of the manufacturer of the middy upper you planned on using, so I'll add this info. Some have been finicky operating properly when using different buffer weights. Some needed an H2 or even a H3 to run properly. I've had several middys (DD, Sabre Defense, LMT MRP) and used a carbine, H, H2 and an A2 buffer, without cycling issues, but settled on H buffers for my use across the board, but glad to find out my middies will operate with the buffers I have on hand. Some have also used the Vltor A5 buffer system. As IG stated, you should be fine with an H buffer and I concur, but then again, it may not.
For God and the soldier we adore, In time of danger, not before! The danger passed, and all things righted, God is forgotten and the soldier slighted." - Rudyard Kipling
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