technical

  1. U

    Index pin undersized by .0002 should it be concerning?

    Just got a barrel with the index pin measuring .12480 Colt TDP spec calls for .1255 +0.000/ -.0005 so .0002 undersized I have another barrel from the same company measuring .12505 should this be concerning at all? The .1248 index pin is not sloppy in my upper receiver mouse hole/index pin slot...
    • URGILOVERR
    • Thread
    • advice or expertise ar15 armorer barrel gunsmithing indexpin tdp technical
    • Replies: 92
    • Forum: The Armory
  2. dmuldrew

    Suppressors Technical Drawing Colt 1911

    Anyone know where I can find a technical drawing to check some frame and trigger guard dimensions? Still trying to figure out why my Ed Brown won't fit into my Blackhawk Serpa holster
  3. canuck

    IRA Lowers Technical Question

    I have a functional question regarding the IRA .308 lowers: On the website, they list two different specs for the lower - one for the Armalite system and one for the DPMS system. Prices are comparable, and I've heard fantastic endorsements of the product. My query goes to the differences...
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