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Posted: 10/30/2009 8:01:53 PM EDT
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I got a pretty good deal on a Colt HBAR 20 inch rifle today. I want to add a flash hider and a front sight base that has a bayonet lug. I realize this will affect the value of the rifle but I want the rifle to be as close as possible to what I carried in the Army.
I know how a barrel is threaded and will let someone more qualified do this for me but I want to know how hard is it to replace the front sight base. Does anyone have a particular brand/model of front sight base that they recommend? Got any links? I appreciate any help you guys can give me. Thank you in advance. CSP |
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Quoted:
I got a pretty good deal on a Colt HBAR 20 inch rifle today. I want to add a flash hider and a front sight base that has a bayonet lug. I realize this will affect the value of the rifle but I want the rifle to be as close as possible to what I carried in the Army. I know how a barrel is threaded and will let someone more qualified do this for me but I want to know how hard is it to replace the front sight base. Does anyone have a particular brand/model of front sight base that they recommend? Got any links? I appreciate any help you guys can give me. Thank you in advance. CSP FWIW, I got one of the last batch of pre-ban Colt HBAR AR-15 6600 or 6601 "Green label" box guns in the 80's, before they came out with the blue labels. Mine still had the flash hider, but Colt was shaving the bayo lugs off before it was "required" by the AWB. I tried to replace my front sight base with a "normal" one, and found the distance between the holes was just enough different that I couldn't swap them out. A good smith could make it work. Since I have several (7) ARs, I thought I'd just leave it alone. I'd take your sight base off and take your bbl to the next big gun show and shop around for one that seems like i would fit easily with the original pins before mailing it off somewhere. Cost should be around $30 or so. You just need a proper size punch to knock the pins out hitting them on the left side to remove. You also need a small punch to remove the gas tube roll pin. Someone at the gun show could easily do it for a small charge. |
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Quoted:
Quoted:
I got a pretty good deal on a Colt HBAR 20 inch rifle today. I want to add a flash hider and a front sight base that has a bayonet lug. I realize this will affect the value of the rifle but I want the rifle to be as close as possible to what I carried in the Army. I know how a barrel is threaded and will let someone more qualified do this for me but I want to know how hard is it to replace the front sight base. Does anyone have a particular brand/model of front sight base that they recommend? Got any links? I appreciate any help you guys can give me. Thank you in advance. CSP FWIW, I got one of the last batch of pre-ban Colt HBAR AR-15 6600 or 6601 "Green label" box guns in the 80's, before they came out with the blue labels. Mine still had the flash hider, but Colt was shaving the bayo lugs off before it was "required" by the AWB. I tried to replace my front sight base with a "normal" one, and found the distance between the holes was just enough different that I couldn't swap them out. A good smith could make it work. Since I have several (7) ARs, I thought I'd just leave it alone. I'd take your sight base off and take your bbl to the next big gun show and shop around for one that seems like i would fit easily with the original pins before mailing it off somewhere. Cost should be around $30 or so. You just need a proper size punch to knock the pins out hitting them on the left side to remove. You also need a small punch to remove the gas tube roll pin. Someone at the gun show could easily do it for a small charge. you would have a better chance of getting the power ball jackpot. the FSB and barrel are match drilled then tapper reamed as one unit. your not going to find a drilled fsb that matches. |
| I would just get the right barrel to start with. Yours is a HB, the GI is not. Yours does not have a threaded muzzle and is 20" long and the milling steps will be cut into making it look odd. Yours does not have a bayo lug, the GI one does. Provided you get ADCO to mill your barrel to GI weight/size spec, thread your barrel, add a FSB that fits and has the lug, mill the front of your barrel to match the way it looks now, then add a FH and refinish your barrel.................what did you save? |
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My brother had ADCO put a rail front sight base/block on his flat top so it got the front sight out of his focal plane and because he wanted the look of the front and rear Troy BUIS. It looks great, gun works fine and no issues in 1000,s of rounds since.
As far as value technicaly it would affect it but these days guys buy what they want. I dont factor in value to my mods as I rarely sell my shit. That and most of my mods as most of ARFCOM guys mods enhance the over all product ; ) If you compare cars to guns dollar for dollar value loss is negligable when you factor in the benefit of the mods. |
| I have no input as to what it will do to its value, but soon after the ban expired I sent my 20" Colt HBAR upper to ADCO, where they replaced the FSB with a lugged one, turned the barrel down to gov't profile, and threaded for and attached an A2 flash hider. The price was right, and I could not be happier with it. |
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Quoted:
I have no input as to what it will do to its value, but soon after the ban expired I sent my 20" Colt HBAR upper to ADCO, where they replaced the FSB with a lugged one, turned the barrel down to gov't profile, and threaded for and attached an A2 flash hider. The price was right, and I could not be happier with it. I would have done the exact same, I just found a new colt A2 barrel before i did it, so I slapped it on instead |
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