Posted: 12/11/2012 4:01:46 PM EDT
I have a Colt 10.5 SBR from a cut down 6920. Currently I have a H2 buffer and I have brass from 1-3 o'clock range. I am wanting to try Colt H3 buffer. Where is the best place to purchase a Colt H3 buffer?
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Are there any benefits from using a H3? Not in a 5.56 gun. I use one in a 6.8 that is overgassed. (seems to be a relatively common problem) 
ETA - the one time I left the H3 in and shot 5.56, it was the only time my Colt failed. That's pretty common. usually the H3 is too much weight and causes short stroking, especially with .223 ammo. |
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Somebody please educate me. I thought an H3 buffer is (can be) beneficial for carbine length, because of its more "violent" action (compared to mid-length and rifle-length systems)? Isn't that why LMT developed the enhanced BCG group (to increase the dwell time?) for a carbine length system?
I have an H3 buffer in my 6520's and they work well with .223 (not sure with the super anemic stuff such as PMC Bronze or Ultramax). Sorry for being confused and thanks for schooling me. |
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Recoil is going to increase with an H3. I wouldn't be concerned with your weapons ejection pattern if it is running reliably. Recoil should decrease with a heavier buffer. More weight = dampened recoil impulse. H3 weighs about the same as a rifle buffer (5.5 oz.). Put a 3.1 oz. rifle length buffer (same weight as a CAR buffer) in a rifle, and the recoil impulse is going to increase due to the lighter weight than the rifle buffer, since the BCG will unlock sooner. Same thing goes with a carbine, but the recoil impulse is already increased due to the shorter gas system. Heavier buffer equals softer recoiling rifle, since it keeps the BCG locked up a little longer. That being said, I have 1 CAR and 1 ML that run a H3 with no problem, And I have a ML that chokes on everything with a H3. I put a H2 in it, and it eats whatever I give it. |
| I ordered one for when I get a can on my 6940. Should be approved pretty soon. I'll snag an H2 also and try them all out with a bunch of different ammo. Could be a good write-up. Some stuff would have to be a little subjective like felt recoil but I could definitely get some info on reliability. |