It's a... Shorty 40 Mk.I (added LH letter)

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I usually never find anything I'm interested in at the guns shows, & if I do it's priced more than it's worth to me. Admittedly I have a narrow scope of interest. So it was much to my delight that I found this Shorty 40 at the "Big Gun Show" recently & was able to give it a new home.

It was definitely not NIB. It was dirty & showed use, with some minor scratches on the slide. Before comitting to the purchase, I removed the slide & was happy to see all the key points were wear-free. The barrel's locking lug has a nice sharp edge to it still. It came with the correct blue plastic box with Performance Center embossed on the top, with those really "hard to open" tabs on the front. Sadly the label was gone, only it's glue remained. :( Two (9) rounds mags were also included, (1) was Performance Center logoed. Nothing else.

In reading thru some of the old threads here, it appears as though this pistol was possibly part of the third batch of ~(500) Lew Horton 4006 PC Shorty 40 (Mk.I's) ordered, Product Code# 170011, largely said to be sold in 1995 within the serial number range of PCS1001 - PCS1583. However I saw one post's picture of their box's label & it's SN# is 200 after mine which showed it was made in Mar-1994 so the 1995 date range may not be totally correct. Maybe it could be part of the 1993 second batch of (500) that ran late into 1994? These were supposedly only made in 1992, 1993, & 1995 in batches of about (500) each.

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(PS: Received this confirmation letter from Lew Horton which shows it was received by them in Oct-1993, so it was part of the second order. :) )

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Shorty 40 Mk.I - Mdl 170011 - Lew Horton Letter
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The Shorty 40 Mk.I's had unmarked slides. The only markings they had was the Performance Center logo on the right side. Weight is 27.1 oz. with an empty mag.

So, after doing a strip down & thorough cleaning, I replaced the firing pin spring with Wolff's extra power spring (#26106XP), Wolff's reduced power (19#) mainspring (#26919) & an ISMI GLC-18# flat recoil spring (31 coils) to replace the factory dual/nested recoil springs. Everything cleaned up well & I was able to polish out the scratches on the slide's shiny sides. The ones on the bead blasted top of the slide were minimized & are barely noticeable now, unless you look hard.

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Shorty 40 Mk.I -001 (disassembled & cleaned)

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Concerning the factory recoil springs, I noticed the Shorty 40 had the same issue I encountered before on my 4013TSW & 4056TSW (both 1997 pre-rails) and that's with the slide bottoming out on the recoil spring, not the frame abutment, when manually cycled fully rearward. The factory dual/nested spring had bright rough flattened surfaces on each end of the outer spring where it was pounded by the slide. I'm not sure why these apparently have this issue?

I'm guessing the spring's enclosure, in the nose of the slide where the spring seats on, should of had a few thousandths less thickness to give the spring adequate space. I had to remove two turns off the flat spring (the same as I had to do on the 4013TSW & 4056TSW) to stop it from bottoming out on the spring.

Wolff doesn't list an extra power replacement magazine spring for the (9) round double stack 40's but they do for the (11) rounds 40's. They each have different PN#s in the S&W catalog, so they must be different, but I decided to compare the two factory mag springs anyway. While the metals may be of different strengths they do have the same length & number of turns. I decided to use Wolff's 5% extra power magazine spring (#74761, for the 11 round 40's), which I had on-hand from my 4006, in the Shorty 40, just to see how it worked. (I worked fine.)

I noticed they made several variations of components on these. Mine has the black hammer, trigger & slide stop, but not the mag release button like some, so I ordered a black one for it as I like that look.

As expected on these hand fitted models, the slide has a nice tight fit and the Bar-Sto barrel & Briley bushing fit are awesome. You can hear, & feel, the difference just racking the slide by hand.

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Shorty 40 Mk.I - (front view on pin gages)

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Shorty 40 Mk.I - (hammer & tang)

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The SA pull is 6.5# & feels good. My trigger gauge only goes to 8#s so I can't tell you exactly what the DA measures but going by feel alone I think my DAO 4056TSW still has the best DA trigger of all my 3rd Gens, but the Shorty 40 is right behind it.

So off to the range with some of my handloads that have performed well in my other 40's: (50) rounds of Zero's 165gr JHP with a full load of Longshot & (50) rounds of Xtreme's 165gr heavy plated HP with a moderate load of Power Pistol, both seated to 1.135" OAL. Both shot & functioned without flaw, though as seems to be the rule with my other S&W 40's & 10mms, it grouped noticeably better with the jacketed bullets. No real surprise.

I generally shoot at 2" red bullseyes, on a white background, at about 13yd. With most all my 3rd Gens using a 6 o'clock hold results in bullseye hits, ideally. However the Shorty 40 consistently hit several inches below the bottom of the bullseye. Only if I completely covered up the bullseye with the front sight could I hit in the bullseye.

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Shorty 40 Mk.I - (top view on SCSW#4)

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After I got home I thought about it & decided to compare sight heights on the Shorty 40 & it's offspring the 4013TSW pre-rail. They both have the same rear sight height but the dot front is taller on the Shorty 40 at .235" vs. the 4013TSW's at .210" tall. (My 4056TSW also has a .210" dot front sight.)

Since I don't have a parts lists for the Shorty 40, I don't know if they all came this way or a previous owner added the taller sight, which accounts for the lower POI.

Anybody else know or can measure your Shorty 40 Mk.I's dot front sight height for comparison?

All & all, a nice addition to my 3rd Gen collection that will get plenty of use. :D

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Shorty 40 Mk.I - (left side view on SCSW#4)

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Shorty 40 Mk.I - (right side view in front of SCSW#4)

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Great post and pictures! I'd call this a very successful rescue. :)

Your story of how you found it reminds me of how I found a Shorty 45 in a gun store I visit occasionally, sitting right there big as life, and how I actually went home and thought about it for 24 hours before going back to make the buy. :eek:

It was about all I could think about for that period of time. :o

Fortunately, it was still there, and I was able to get it for a price I couldn't believe, though with a single mag and no box compared to what came with yours. One of my best days in gun-buying, so I can appreciate how you feel about this one! :D
 
Awesome work Bluedot. I have a pair of them and was fortunate, (as I have no gunsmithing skills), that both were in mint condition when I purchased them.
I envy you guys with these skills.
 
Bluedot,

the parts list that I have shows 2 front sight heights for the small 40's.
They list .204 for the 4013TSW, 4053TSW, 4056TSW
and .228 for the 4043TSW and 4046TSW.
They also list .228 for the 4006CHP.

Hope this helps.
Tom
 
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I have a pair of them and was fortunate, (as I have no gunsmithing skills), that both were in mint condition when I purchased them.


Would you be able to measure their front sight's height with a caliper for me?

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Bluedot,

the parts list that I have shows 2 front sight heights for the small 40's.
They list .204 for the 4013TSW, 4053TSW, 4056TSW
and .228 for the 4043TSW and 4046TSW.
They also list .228 for the 4006CHP.

Hope this helps.
Tom


I saw the .204" for the 4013TSW in the parts catalog. It looks like all the 4" 40 S&Ws have the .228" front sight. The only other .40 S&W that had the .228" that wasn't a 4" was the 3-1/2" 4040.

Mine could actually be .228" tall if measured off the gun but I'm not of course.

. . .

Hopefully someone else can measure their's as a comparison.

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Shorty 40 Mk.I - Zero 165gr JHP & 6.7gr Unique

Added the Lew Horton letter, I just received, to the original post. Looks like this one was actually made in Oct-1993, not 1994.

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Took it to the range again today & tried a couple different loads. Found it liked the Unique @ 6.7grs with Zero's 165gr JHP the best of those tested.

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Shorty 40 Mk.I - Zero 165gr JHP & 6.7gr Unique

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Shorty 40 Mk.I - Zero 165gr JHP & 6.7gr Unique

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Nice shootin'!

I like that grip sleeve. I run a similar Hogue Hand-All on my compact 45s. I'm not familiar with the model you have, but it looks like it would be comfortable and thick enough to get a really good purchase for larger-handed shooters.

Thanks again for the thread. S&W Shortys rock!
 
4013TSW & 4056TSW pre-rails

The grip sleeve is Pachmayr's, #05172, for a S&W M&P series full size. I saw it at a LGS & got it on a whim. It's a very soft silicone type rubber. Really softens the factory grip's feel. I cut about 1/2" off the bottom to make it fit.

I usually put Hogue's rubber grips on my 3rd Gens. These shorter 9 rd. magazine models use a one-piece wrap-around variation (like on the 4056TSW below), not the more common two-piece grips. The one-piece grip is a little harder to remove (than the two-piece) & thought I'd try something different this time. :)

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4013TSW & 4056TSW (pre-rails)

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Front sight replaced

So off to the range with some of my handloads...

I generally shoot at 2" red bullseyes, on a white background, at about 13yd. With most all my 3rd Gens using a 6 o'clock hold results in bullseye hits, ideally. However the Shorty 40 consistently hit several inches below the bottom of the bullseye. Only if I completely covered up the bullseye with the front sight could I hit in the bullseye.

After I got home I thought about it & decided to compare sight heights on the Shorty 40 & it's offspring the 4013TSW pre-rail. They both have the same rear sight height but the dot front is taller on the Shorty 40 at .235" vs. the 4013TSW's at .210" tall. (My 4056TSW also has a .210" dot front sight.)
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Decided to work on correcting this problem with the Shorty 40. Bought a new replacement .204" tall front sight (S&W# 109070000) from MidwayUSA on my last order.

Got the Shorty 40's front sight off & it measured .224" tall. Confirmed the replacement sight's height at .204" tall & installed it.

As a strange aside, the pre-rail 4013TSW (CHP turn-in) pistol, that I recently bought, shoots high even though it's front sight measures the same as my other 4013TSW & 4056TSW pre-rails. (All of the rear sights appear to be the same, as best I can measure without removing them.) I decided to correct it by installing the .224" sight, from the Shorty 40, on it. Removed it's sight (which measured .204" tall) & installed the .224".

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S&W compact 40 front sights - .204 & .224 - side view

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S&W compact 40 front sights - .204 & .224 - front view

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Just a note, it's been stated that the front sight needs to be removed, & installed, to/from the right side, which I did. This picture shows why it needs to be started from the right side. As indicated by the arrows, the front sight base's left edge is beveled so it can be started easily & driven in from the right side of the dovetail in the slide, but not from the other side.

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S&W compact 40 front sights - .204 & .224 - bottom view

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Took the Shorty 40 & the CHP 4013TSW to the range the other day & at my usual distance, 12-13yds, both are now hitting the bullseye with a 6 o'clock hold (POA=POI). Problem solved. :D

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3rd Gen - Compact 40 S&W pre-rails

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very nice pistol and narrative;)...I don't know how I missed this thread the first time through....and I think my chance of finding an affordable for me PC gun has passed me by:(
 
Concerning the factory recoil springs, I noticed the Shorty 40 had the same issue I encountered before on my 4013TSW & 4056TSW (both 1997 pre-rails) and that's with the slide bottoming out on the recoil spring, not the frame abutment, when manually cycled fully rearward. The factory dual/nested spring had bright rough flattened surfaces on each end of the outer spring where it was pounded by the slide. I'm not sure why these apparently have this issue?

I'm guessing the spring's enclosure, in the nose of the slide where the spring seats on, should of had a few thousandths less thickness to give the spring adequate space. I had to remove two turns off the flat spring (the same as I had to do on the 4013TSW & 4056TSW) to stop it from bottoming out on the spring.

Thank you very much for the detailed post, pictures and discussion of the sights.

In regards to the above discussion of the recoil springs, can you explain a little more about the modification you made and the inspection process that led you to make the change.

I recently purchased a MKIII Shorty 40 and I am concerned about the recoil spring, knowing it is 20 years old, I would like to replace both the nested springs. I will also probably replace the factory adjustable sight with a fixed Novak rear.

aorxRAd.jpg
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Checking a recoil spring's fitment

In regards to the above discussion of the recoil springs, can you explain a little more about the modification you made and the inspection process that led you to make the change.

First, the Shorty 40 is not the only one of my compact 40s that I've noticed the factory dual/nested springs having this problem; the slide bottoming out on the spring, not the frame stop.

The fact that the ISMI GLC-18# flat recoil spring (31 coils) has the same issue is, of course, because it's not made for these guns, so the length has to be checked & tweeked if too long. In some other model S&Ws that I've used these GLC springs in they did not require any shortening (4013 non-TSW). It's good to check any new spring you install for proper fitment.

How do you check this fitment? With no recoil spring installed, mount the naked slide (no bbl. or guide rod needed) on the frame I slide it fully rearward. Either mentally, or with a pencil, note/mark where the slide stop catch notch is in reference to the frame. Also notice the sound the slide makes when it hits the frame stop.

Next install the fully equipped slide on the frame & perform the same check noting where the slide stops, in reference to the frame, & the sound it makes when it stops.

If the spring is too long the slide will stop before the mark is reached, will make a dull metal sound when it hits the stop, & will lack a solid feel when it stops (because the spring is stopping slide, not the frame stop).

For the GLC flat spring I shorten it using my Dremel with a small cut-off disk installed, taking half a turn off at a time. Reinstall the shortened spring (with the cut end at the muzzle) & re-check where it stops. If still too long cut another half turn off the same end, always leaving the factory flat end to mate against the guide rod flange.

Repeat until the slide stops at the mark & has an unrestricted feel. You can use the same precedure with single round wire recoil springs, if needed.

Before you call it done, round/smooth off the cut end of the shortened spring & turn it's end inward to try and form a flatter end shape.

One last note, I did a little home test measuring the force required to push the slide rearward, with the two different recoil springs installed in my (4) compact 40s.

Using a deep socket to push on the slide at the muzzle, & a small square of plywood on a bathroom scale, I determined that, with the number of turns I needed to cut-off for a proper fit, the factory dual/nest springs provided a little more force/resistance, as measured on the scale, & would be the better choice for controlling the slide. (I've kept the GLC in several & don't really see a noticeable difference in brass ejection.)

All my compact 40s have a Wolff 19# mainspring verses the factory 20#. It's still a relative comparison across the board. Conversely, a heavier mainspring would raise those readings.

Hope this helps.

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Compact 40 double stack - recoil spring test
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Great, that helps tremendously.

One more question. Do you have any experience with the Sprinco Springs Part #45162? I have read somewhere that this nested spring set will work with the 4013TSW and Shorty 40, but they are not specifically listed as compatible on their website.

Sprinco USA - Springs

I have been unable to find both factory S&W springs in stock so I have ordered the Sprinco Springs. I'll test them out using the method you detailed. Thanks again.
 
Sprinco recoil springs - dual/nested

Yes, they are for them too.

When I corresponded with Sprinco/Alan about 18 months ago he asked for all the specific models they'd work in, which I gave him. He never updated the website with the info. :rolleyes:

Here is that list:

"As far as a list of models that uses them, I didn't hear you were needing that. I just searched the S&W Semi-Auto Parts Catalog on PN# 108670000 (inner spring) & found the following models use the dual springs:

4013TSW
4053TSW
4056TSW
4013 (R4)
4014 (R4)
4040
4053 (R4)
4054 (R4)
4516 (all except -1)
4513TSW
4553TSW
457
457D "

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The Performance Center - back in the good ole days

I picked up some old S&W magazines at the Wannenmacher Gun Show & was surprised to come across a brief article on the early Performance Center that also mentioned the Shorty 40.

It's weird reading a magazine & seeing 3rd Gen's in it. :D

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Shorty 40 Mk.I - magazine article

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Shorty 40 Mk.I - magazine article

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Shorty 40 Mk.I - magazine article

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Concerning the factory recoil springs, I noticed the Shorty 40 had the same issue I encountered before on my 4013TSW & 4056TSW (both 1997 pre-rails) and that's with the slide bottoming out on the recoil spring, not the frame abutment, when manually cycled fully rearward. The factory dual/nested spring had bright rough flattened surfaces on each end of the outer spring where it was pounded by the slide. I'm not sure why these apparently have this issue?

...I determined that, with the number of turns I needed to cut-off (the ISMI flat-wire spring) for a proper fit, the factory dual/nest springs provided a little more force/resistance, as measured on the scale, & would be the better choice for controlling the slide. (I've kept the GLC in several & don't really see a noticeable difference in brass ejection.)
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Just a follow-up to what I previously said about the modified ISMI flat-wire not having as much force as the factory dual/nested recoil springs in my measurements (18# -vs- 20#) & concerns I've mentioned that with full power loads it might not be strong enough .

Recently I did some chrono testing on my favorite 40 S&W handloads & was anticipating the likelihood of a loss of velocity with the upper loads because the 4013TSW I was using had a fitted ISMI GLC-20 flat-wire recoil spring (with 4.5 coils cut off) & lighter hammer/mainspring installed.

I was pleasantly surprised to find that all of the loads' velocities increased incrementally with no unexpected losses.

So I just wanted to share that even though the flat-wire springs don't measure the full compressed force of the dual/nested springs they performed fine in my chrono tests at the range.

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Not bad power too! :D
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