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Carbine length
Carbine length gas system. It's a stock DPMS lower. I tried them with both of my lowers one is a factory A2 style lower and the other is one I put together with an adjustable stock. I don't have any flattened primers or any other pressure indications. I'll get a gauge pin set and measure the primer pockets and compare them to my .223 pockets.
1900 fps is not all that hot. I did get an adjustable gas tube today .. I'll try that ..
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