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Posted: 2/19/2015 2:49:14 PM EDT
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New guy here.
What time frame would a forged, front sight base be that hasn't had the flashing machined off, but is void of any markings. It has the drain hole. 
I'm working on my first retro rifle. Started with a almost excellent condition M16A1 parts kit, and a engraved, anodized 80% lower bought off of Gunbroker 
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Hmmm..going off memory here, which isn't what it used to be. I believe it would be late 67 to around 70??? Someone will correct me. (one of the many knowledgable guys here) if I'm wrong. Looks like your upper receiver has a forge code on it, which would make it 69 sometime, or later?
Again, someone correct me ......... |
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Quoted:
FSB in the first pic looks to have a sleeve in it to reduce from .750, to .625. FSB in pic is a later A2 unbranded one, possibly "F" marked, as they are quite common. I think the counterbore on the rear face is making it looked sleaved, but I don't think it is, looks like a normal .625" to me. |
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Thanks for the reply.
Not sleeved, just has a counter bore. Is it still a A2? It looks indentical to my other A1 Front Sight Base that has the C and Bell markings. Quoted:
FSB in the first pic looks to have a sleeve in it to reduce from .750, to .625. FSB in pic is a later A2 unbranded one, possibly "F" marked, as they are quite common. |
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Very popular item on export rifles manufactured in 77-78. If it came in one of the parts kits that's what you have more than likely. Probably 20% of export rifle de-mill kits had identical FSB in pics. Should be same era as C & Bell with flash or post 1972 as C & Bell in 1971 had the flash removed.
Possibly some old stock that wasn't completely machined laying around Colt but I kinda doubt it. I lean more to different govt sub than C & Bell. Get a chance read Elkie Colt guide. Always exceptions like GM, H&R of same era but most of those have other identifying marks, numbers and such. Engineering Research, FN, and current production .625 Colt kinda fit in different but same category. Did see current triangle with B etc FSB's in some of the export kits also making me believe these were purchased at a later date for replacement than late 70's production rifles. These were probably barrel swaps at later date of original rifle purchase IMO. |
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Thanks, I gotta get a copy of Elkie Colt Guide.
It did come from a recently bought M16A1 parts kit, so it probably is 77-78 like you suggest. Looks like a good starting point for reworking to represent an earlier part. Quoted:
Very popular item on export rifles manufactured in 77-78. If it came in one of the parts kits that's what you have more than likely. Probably 20% of export rifle de-mill kits had identical FSB in pics. Should be same era as C & Bell with flash or post 1972 as C & Bell in 1971 had the flash removed. Possibly some old stock that wasn't completely machined laying around Colt but I kinda doubt it. I lean more to different govt sub than C & Bell. Get a chance read Elkie Colt guide. Always exceptions like GM, H&R of same era but most of those have other identifying marks, numbers and such. Engineering Research, FN, and current production .625 Colt kinda fit in different but same category. Did see current triangle with B etc FSB's in some of the export kits also making me believe these were purchased at a later date for replacement than late 70's production rifles. These were probably barrel swaps at later date of original rifle purchase IMO. |
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Ah,where you got it would've been good info from the get. I would have to agree with Cdenmark.
BTW, here's your copy of Ekie's guide: Ekie's M16 Guide Quoted:
Thanks, I gotta get a copy of Elkie Colt Guide. It did come from a recently bought M16A1 parts kit, so it probably is 77-78 like you suggest. Looks like a good starting point for reworking to represent an earlier part. Quoted:
Thanks, I gotta get a copy of Elkie Colt Guide. It did come from a recently bought M16A1 parts kit, so it probably is 77-78 like you suggest. Looks like a good starting point for reworking to represent an earlier part. Quoted:
Very popular item on export rifles manufactured in 77-78. If it came in one of the parts kits that's what you have more than likely. Probably 20% of export rifle de-mill kits had identical FSB in pics. Should be same era as C & Bell with flash or post 1972 as C & Bell in 1971 had the flash removed. Possibly some old stock that wasn't completely machined laying around Colt but I kinda doubt it. I lean more to different govt sub than C & Bell. Get a chance read Elkie Colt guide. Always exceptions like GM, H&R of same era but most of those have other identifying marks, numbers and such. Engineering Research, FN, and current production .625 Colt kinda fit in different but same category. Did see current triangle with B etc FSB's in some of the export kits also making me believe these were purchased at a later date for replacement than late 70's production rifles. These were probably barrel swaps at later date of original rifle purchase IMO. |
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