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Posted: 5/6/2012 7:15:07 AM EDT
| I am in the process of building my own AR, I've dicided to go with 6.8 SPC mid-length upper and I would like some input. Will a standard spring and buffer work with this caliber or do I have to go with a heavier spring and buffer? |
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Quoted:
My daughter built 2 M4's in 6.8 we use as deer rifles. Your concern is valid as they were both WAY over gassed. I debated H, H1, H2 or stronger buffer springs for a while before I found an adjustable gas tube by PRI on Midway. worked great just set and forget.  you have pics of a mid length M4 contoured barrel?...never seen one and am curious. |
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Quoted:
Right now I have a colapsable six position stock kit that I got from PSA it came with a stock,buffer tube,spring and buffer there's no lettering on the buffer as far as H,H1,H2. Typically the CAR(bine) or standard (carbine) buffer is not marked. H is H1 
H3 (not pictured) uses 3 tungsten slugs and weighs 5.4 oz. |
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