ASP 9mm recoil spring - Pistolsmith

Go Back   Pistolsmith > Pistolsmith Forum > Pistolsmiths

LinkBack Thread Tools Display Modes
Old 01-27-2019, 03:12 PM   #1
Join Date: Jan 2002
Location: Alabama
Posts: 57
ASP 9mm recoil spring

Howdy, folks!

Does anyone know the correct poundage rating for the recoil spring for an ASP conversion of the S&W 39? The factory spring is 14#, but the ASP is a cut down conversion and needs a stiffer spring. The 669 and 3913 use #15 if I recall correctly (the Wolff site is done right now), but even these are around a 1/4" too long.

I'm looking at buying some extra strength 39 or 3913 springs and need to know what poundage to order. Has anyone dealt with this problem before?

Remove Ads
Old 01-27-2019, 04:55 PM   #2
Senior Member
Join Date: Jun 2001
Posts: 1,800
All I can suggest is buying a selection of 3913 type recoil springs and shorten them to size, then test fire, starting out with the strongest poundage.

Reduce the spring one pound at a time until the gun is reliable and throws the fired cases a reasonable distance.
Too far and the spring is too light. Too close, not strong enough.
Too strong is better as long as the gun is reliable.
Old 01-30-2019, 07:14 PM   #3
Join Date: Jan 2002
Location: Alabama
Posts: 57

Thanks for the feedback. This is the strategy I plan on using. I was hoping someone else had already sorted this out. I guess not many folks intend on shooting their ASP anymore. I probably shouldn't either but I hate keeping something as just a safe queen.
Old 01-31-2019, 04:04 PM   #4
Senior Member
Join Date: Jun 2001
Posts: 1,800
This sort of thing is common with custom guns.
If anyone ever knew what weight spring was used it's been forgotten.
Since no one remembers, this leaves you to experiment.

One way you might be able to find out......
If you're an NRA member** you can send the American Rifleman Dope Bag a SASE with ONE question per letter and the Rifleman Tech Staff will answer it.
If anyone knows about the Asp they would know.

** Shame on you if you aren't.

  Pistolsmith > Pistolsmith Forum > Pistolsmiths

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rebound slide spring weight Smartbooby Pistolsmiths 5 05-09-2020 04:06 PM
MTECH Tactical Stonewashed Dagger Spring Assisted Knife - $7.88 Shipped apps47inc Gun.Deals 0 09-18-2018 11:35 AM
Schmidt & Bender Spring Sale, 3/29/2018 gr8fuldoug Camera Land 0 03-29-2018 08:29 AM
Camera Land's "A Spring Break For You" Sale gr8fuldoug Camera Land 1 04-17-2017 10:37 AM
Ruger 1911 spring weights? UncleEd Ruger Pistols 3 10-04-2016 10:42 AM

Top Gun Sites Top Sites List

Powered by vBulletin 3.8.8
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright © 1999-2012 Pistolsmith. All rights reserved.