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Posted: 1/9/2014 4:07:20 AM EDT
| In a 7.5" 5.56 Pistol/SBR to run 100%? |
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It probably would, but that would leave a lot of space for the buffers to free float in. My recommendation would be to use a standard buffer along with the H3 and then you can build whatever combination of weights you want from the two buffers. Std buffers are usually about $10, so its not a lot of extra money. |
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Very short barrels and gas systems are much more "touchy" to changes in operation than longer. Significantly changing buffer weights makes a difference, you may have to try a variety of buffers to get a working system.
Make sure you get real buffering buffers with the multiple sliding weights, as the buffering action is more critical with higher energy/higher cyclic rate as is common with these kind of configurations. |
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Phase5 just came out with a tuned spring rated pistol buffer spring.
I was reading it on instgram...at first I thought it was just another spring with gay spray paint on it....but here is what the had to say about it. phase5weaponsystems wow you guys are a tough crowd! In the past few years we have messed with springs from different companies but few have been just right. Usually the high power springs were too stiff; so we spoke with a 112 year old spring company to help us with our specific pistol needs. From the exact number of coils to the material choice the spring has just enough extra power by percentage% than a mil spec spring that helps the pistol cycle better for us with standard carbine buffers. No (heavy) buffer needed. We are just trying to share our findings with people who are building guns. We try to provide value when we can Read more at http://web.stagram.com/n/phase5weaponsystems/#qAElmIfejBEPv422.99 Coil count, spring rates and heat treats are real engineering fyi. Sounds like they did some research. $8 Link - open all comments and read for yourself. 
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Quoted:
In a 7.5" 5.56 Pistol/SBR to run 100%? My setup 7.5" barrel (gas port hole size .075, pistol gas tube,m16 carrier, Pistol buffer tube which utilized standard carbine spring and I use a H2 carbine buffer. This was my starting setup and ran like a champ no changes. |
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