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12/19/2010 1:09:30 PM EDT
I' have a Colt pre ban with the sear block and small pivot pin.
It has the famous Colt C bolt carrier, any standard semi auto
carrier will work in this. Right?

I know I can have the block removed but don't want empty holes in the lower.
How much of the block needs to be removed to use a full auto carrier (M16 style)?

thanks
12/19/2010 1:37:46 PM EDT
[#1]
I don't believe pre-bans had the sear block and/or open bottomed carriers..I believe both of those features belong to post ban lowers
12/19/2010 1:39:00 PM EDT
[#2]
Quoted:
I don't believe pre-bans had the sear block and/or open bottomed carriers..I believe both of those features belong to post ban lowers


No.
12/19/2010 1:40:34 PM EDT
[#3]
Quoted:
I' have a Colt pre ban with the sear block and small pivot pin.
It has the famous Colt C bolt carrier, any standard semi auto
carrier will work in this. Right?

I know I can have the block removed but don't want empty holes in the lower.
How much of the block needs to be removed to use a full auto carrier (M16 style)?

thanks


Any semi auto carrier will work.  The block would have to be flush with the top of the lower to use an M16 carrier.  Yuor best bet would be to sell this to someone in a ban state and buy new.
12/19/2010 1:44:40 PM EDT
[#4]
Quoted:
Quoted:
I don't believe pre-bans had the sear block and/or open bottomed carriers..I believe both of those features belong to post ban lowers


No.


so when were they used?
12/19/2010 2:23:16 PM EDT
[#5]
Quoted:
Quoted:
Quoted:
I don't believe pre-bans had the sear block and/or open bottomed carriers..I believe both of those features belong to post ban lowers


No.


so when were they used?


I bought a new Colt AR in 1993 and it had that.
12/19/2010 2:33:12 PM EDT
[#6]
Quoted:
Quoted:
Quoted:
Quoted:
I don't believe pre-bans had the sear block and/or open bottomed carriers..I believe both of those features belong to post ban lowers


No.


so when were they used?


I bought a new Colt AR in 1993 and it had that.


My '94 6521 had a pinned block as well.
12/19/2010 4:17:56 PM EDT
[#7]
so I guess I should have said ban era features instead of post ban
12/19/2010 6:38:42 PM EDT
[#8]
Colt did things like the blocks on their own before the ban in an attempt to stop alteration that would produce full auto fire. Was not really associated with the ban.
12/19/2010 6:48:51 PM EDT
[#9]
Quoted:
Colt did things like the blocks on their own before the ban in an attempt to stop alteration that would produce full auto fire. Was not really associated with the ban.


but does anybody know exactly what year they started??
12/19/2010 8:15:15 PM EDT
[#10]
Quoted:
Quoted:
Colt did things like the blocks on their own before the ban in an attempt to stop alteration that would produce full auto fire. Was not really associated with the ban.


but does anybody know exactly what year they started??


In early 1989 Colt voluntarily halted civilian sales of AR-15's shortly after the Bush administration halted imports of similar weapons.
In the spring of 1990 Colt introduced their new "Sporter" rifle (no bayo lug,  no flash hider, and five round magazine), if memory serves my correctly the butchered bolt carrier and the added block in the lower were part of this re-introduction.
12/20/2010 3:55:29 AM EDT
[#11]
Quoted:
Quoted:
Quoted:
Colt did things like the blocks on their own before the ban in an attempt to stop alteration that would produce full auto fire. Was not really associated with the ban.


but does anybody know exactly what year they started??


In early 1989 Colt voluntarily halted civilian sales of AR-15's shortly after the Bush administration halted imports of similar weapons.
In the spring of 1990 Colt introduced their new "Sporter" rifle (no bayo lug,  no flash hider, and five round magazine), if memory serves my correctly the butchered bolt carrier and the added block in the lower were part of this re-introduction.


thanks for the info
12/20/2010 4:39:04 AM EDT
[#12]
Quoted:
Quoted:
Quoted:
Colt did things like the blocks on their own before the ban in an attempt to stop alteration that would produce full auto fire. Was not really associated with the ban.


but does anybody know exactly what year they started??


In early 1989 Colt voluntarily halted civilian sales of AR-15's shortly after the Bush administration halted imports of similar weapons.
In the spring of 1990 Colt introduced their new "Sporter" rifle (no bayo lug,  no flash hider, and five round magazine), if memory serves my correctly the butchered bolt carrier and the added block in the lower were part of this re-introduction.


Picked this up new in the fall of 94' just before the ban. Came with 2- 20 round mags and threaded barrel with flash hider.
No lug
12/20/2010 4:47:31 AM EDT
[#13]
Quoted:
Quoted:
I' have a Colt pre ban with the sear block and small pivot pin.
It has the famous Colt C bolt carrier, any standard semi auto
carrier will work in this. Right?

I know I can have the block removed but don't want empty holes in the lower.
How much of the block needs to be removed to use a full auto carrier (M16 style)?

thanks


Any semi auto carrier will work.  The block would have to be flush with the top of the lower to use an M16 carrier.  Yuor best bet would be to sell this to someone in a ban state and buy new.


So what do you think it worth?
A2  20'' Match H-Bar, all Colt
chrome lined threaded barrel with flash hider
Small pivot pin upper
2 -20 round mags
Cleaning kit
Colt user booklet
Safe Queen - only 20 rds fired for function ck
NO Box

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