1911A1 Slide Takedown Hole

[Bedfordtec]

I was looking at a WW Ii 1911A1 frame and a Post War Series 80 side by side and I noted that the placement of the hole for the slide stop was different. On the newer piece you don’t have to retract the slide as much to remove it. When did Colt move it and why? Thanks

 

[Kp321]

What is your frame of reference for the slide stop hole? Could you post a picture so we can see what you are observing? Moving the slide stop hole in relation to the vertical impact surface would substantially change the geometry of the operation.

 

[JTQ]

I think he may be talking about the take down notch in relation to the slide lock notch.

In a quick google search, it does appear that the separation between the two has lengthened over the years. I don't know why or when it happened.

 

[JTQ]

One explanation I read - it was moved farther back for folks that were taking the pistol down by removing the slide stop first, rather than removing the spring plug. Without removing the spring plug first, the recoil spring is still under tension, and the less distance you have to retract the slide to get to the take down notch, the less tension on the spring.

I don't know if I completely believe that explanation, but I suppose there is some logic to it.

It doesn't seem as if it is consistent throughout the Colt line-up either.

The Wiley Clapp model has the notch more forward https://www.colt.com/series/WILEY_CLAPP_SERIES

than for instance, the Competition Series https://www.colt.com/series/COMPETITION_SERIES

 

[herrwalther]

Never noticed before. Looking at my 1911s, both have the forward notch like shown on the Wiley Clapp model. With the notch for the slide lock open on empty shortly to the left. I always take down my 1911s by removing the spring tension first. Whether that is removing the spring plug or by taking out the FL guide rod.