View Profile: markyboy57 - Colt Forum
  • markyboy57's Avatar
    04-13-2017, 11:19 AM
    markyboy57 replied to a thread SP 1 value in Colt Long Guns
    Your serial number on the colt site says 1977 manufacture date. The bolt carrier is M16 type, but I believe they used that kind at that time period....
    8 replies | 266 view(s)
  • markyboy57's Avatar
    04-07-2017, 07:40 PM
    Can I ask did you buy this new or used? My 6721 lower is marked AR-15 A3 Tactical Carbine. If new maybe the wrong lower was put on at the factory....
    6 replies | 282 view(s)
  • markyboy57's Avatar
    03-25-2017, 10:08 AM
    Being that it is a 20" HBAR barrel 1/9 twist, it was probably changed out and put on that colt A2 upper. The only 20" 1/9 twist HBAR's I can think of...
    11 replies | 355 view(s)
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CNC Service Engineer


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