Posted: 10/7/2007 8:43:54 AM EDT
| Anybody know the pin size for the front sight assembly. The two that hold it to the barrel and the gas tube pin. My great deal-upper was minus a few things (like a firing pin, cotter pin, and bolt key) Any help on the pin size with save me time at the hardware store. Thanks! |
the two pins that hold it to the barrel are actually taper pins... dunno if you can find those at a hardware store here are the taper pins: e-gunparts.com/product.asp?chrProductSKU=197070B&MC= and here's the roll pin for the gas block (you can probably find it much cheaper at a hardware store (don't know the dimensions) e-gunparts.com/product.asp?chrProductSKU=196060C&MC= ETA: found all of the dimensions: www.biggerhammer.net/ar15/pins.html |
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The pins holding the front sight tower onto the barrel should be taper pins, not roll pins. I suggest mail ordering the parts from a reputable firm - by doing so, you'll spend less time, and possibly less money. www.dpmsinc.com/store/index.aspx?cat=1798 shows the gas tube roll pin sells for $0.25, and taper pins going for $0.75 each. While shipping & handling on small orders typically jacks the cost up, you're probably ordering enough parts to offset that. |
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I think it's important to point out that the taper pins go in only one way, but I don't remember which. You should be able to tell by examining the holes, but most seem to go in from right to left. ETA: Please don't think I'm disparaging your knowledge in any way. We had a member recently take his brake off without knowing that it was pinned and welded in place, causing severe damage to his barrel. A quick tip like mine could have saved alot of headaches. |