Boy, Did I Get Schooled!

[pipboy344]

How is that Mossberg Shockwave I see everywhere?

[SteyrAUG]

I never tire of seeing a phone picture of somebody's "inherited" Thompson with 18" barrel that their "grandfather" brought back from WWII.

Also I recently learned that ALL triangular handguard SP1 rifles are M-16s regardless of the fact that they might be marked "AR-15" or anything like that.

[pipboy344]

I never tire of seeing a phone picture of somebody's "inherited" Thompson with 18" barrel that their "grandfather" brought back from WWII.

Also I recently learned that ALL triangular handguard SP1 rifles are M-16s regardless of the fact that they might be marked "AR-15" or anything like that.

Well, technically they are almost entirely actual M16 parts & all the M16s’ before the A1 were marked AR-15. Before 1967 you could still find auto-sears in the SP1. I’ve been looking for a shooter since I was 14.

[SteyrAUG]

Well, technically they are almost entirely actual M16 parts & all the M16s’ before the A1 were marked AR-15. Before 1967 you could still find auto-sears in the SP1. I’ve been looking for a shooter since I was 14.

SP1's have large screw receivers so even from the starting point they are not M-16s.

[pipboy344]

SP1's have large screw receivers so even from the starting point they are not M-16s.

Read “almost”. Except for those holes they’re still the same spec as a Colt 602 upper.

[JoshNC]

Well, technically they are almost entirely actual M16 parts & all the M16s’ before the A1 were marked AR-15. Before 1967 you could still find auto-sears in the SP1. I’ve been looking for a shooter since I was 14.

I don’t believe any SP1 ever had an autosear from the factory. Lots of AR15 marked transferable fullauto Colts (I have a 614), but no SP1 were made fullauto from Hartford.

Also, the front takedown is standard AR15/M16 diameter on the 601, not the larger size of the SP1. This can be seen in this thread:
https://www.ar15.com/forums/ar-15/Pr...os/123-357083/

[pipboy344]

I don’t believe any SP1 ever have an autosear.

Some slipped through by accident and incompetence, also some were intentional and designed for sale to foreign governments but I believe those were given special rollmarks afterward.

[JoshNC]

Some slipped through by accident and incompetence, also some were intentional and designed for sale to foreign governments but I believe those were given special rollmarks afterward.

Do you have any proof to corroborate this? I’ve been a student of Colt ARs and M16s since the early 90s, spoken with and followed (on forums like subguns) many whom I would consider to be experts on Colt. Guys like Dan Shea, Dennis Todd, Tony K, among others. To a man they have all said that there were no factory select fire SP1s. This used to come up a few times a year when someone would post a converted select fire SP1 and the seller claimed that the SP1 was converted by Colt. I have seen AR15 marked select fire guns that had no additional model marking above the serial number and were in 603 configuration.

[Yeetster]

Exactly the reason I avoid gun shops and gun conversation in general like the plague.

[pipboy344]

Do you have any proof to corroborate this? I’ve been a student of Colt ARs and M16s since the early 90s, spoken with and followed (on forums like subguns) many whom I would consider to be experts on Colt. Guys like Dan Shea, Dennis Todd, Tony K, among others. To a man they have all said that there were no factory select fire SP1s. This used to come up a few times a year when someone would post a converted select fire SP1 and the seller claimed that the SP1 was converted by Colt. I have seen AR15 marked select fire guns that had no additional model marking above the serial number and were in 603 configuration.

It was on Arfcom about 5 years ago, I’ve looked for the thread already with no luck.

I think one of the men responsible for the A2 changes was there.