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Posted: 10/31/2003 7:54:51 PM EDT
Ive got a good line on a colt 1x7 20" HBAR, can this be turned into an M4 barrel? If not maybe Ill just trade it off.
Link Posted: 11/1/2003 3:41:46 AM EDT
I don't think you can do that easily because of your front sight. However, instead of making it an M4, why don't you consider to make it a 18" SPR or 16" dissipator. Those two types of rifles don't give you the look of M4 but the power and ease of handling.
Link Posted: 11/1/2003 1:37:29 PM EDT
Originally Posted By wengv: I don't think you can do that easily because of your front sight.
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Yes - you'd still have the two pin cuts, plus the gas port hole, which would be right at the 12" - 13" mark. I am shortening a 20" HBAR blank to 16" right now, but this BBL has no sight cuts/holes. The M4 contour would probably not be cost-effective in the long run. You'd need to re-finish it, plus mount the front sight again, and locate & drill the gas port hole, then pin the sight base...blah... Try a Sale/Trade posting in the Equipment Exchange.
Link Posted: 11/1/2003 5:29:26 PM EDT
Is the gas hole and pin locations on the 20" barrel beyond 14.5"? If so I dont see the big problem in drilling a couple new holes.
Link Posted: 11/1/2003 6:16:30 PM EDT
[Last Edit: 11/1/2003 6:30:37 PM EDT by postino]
Originally Posted By keller: Is the gas hole and pin locations on the 20" barrel beyond 14.5"?
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No. The gas port hole is exactly at 13.5", measuring from the very rear end of the barrel. The rear pin is just about 1/8" behind that, with the front pin 1.5" ahead of the rear pin. (I measure 13 1/8" from the bolt face to the gas port hole, on 20" barrel). You could make a 3" long fake suppressor, internally threaded full length, thread the end of the barrel where the holes/cuts are, and cover all that stuff...And then make it permanent... Lotta work...makes me tired just thinking about it all...
Link Posted: 11/1/2003 7:18:34 PM EDT
Looks like it wont work. Thanks for the info guys. Hmm maybe an spr clone, or Ill just trade it off. Thanks for the help.
Link Posted: 11/2/2003 6:07:05 AM EDT
If you have a lathe, and like to watch chips fly, then this is a worthwhile modification (shortening 20" to 16" or less). I have seen new mil-spec 20" HBAR barrels for ~$50...
Link Posted: 11/2/2003 7:47:18 AM EDT
[Last Edit: 11/2/2003 7:18:06 PM EDT by keller]
Thanks again.
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