buit when using standard 5.56 bolts and pins it is adviseable to lengthen the pin protrusion about. I wish there was someone else doing this as I need to replace the model 1 sales bolt.large, long pins punch thru primers quite easily. 393 inches from the standard bolt face of. Kurt of Kurt's Kustom guns actually modified standard 5.56 ar bolts by simply opening the face up to. the S&W bolt can use nearly standard sized diameter firing pins of the.
In answer to your question about firing pin sizes for 5.45x39 bolts.įirst which make bolt do you have? that will make a difference in the answer.įor instance I now know that the Model 1 Sales bolts use much larger diameter pins than anything else out there.0.078 inches diameter with a fairly large bolt hole.
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