Flea Posted March 28, 2021 Share Posted March 28, 2021 Not a gunsmith. Gen 5 G34 with mag in it with no ammo. Gun and factory mags were brand new when I bought it in Feb 2020. Wolf 13lb recoil spring. About 3,300 rounds on it. The gun was cleaned and lubed one week ago. Any help would be appreciated. Thanks Link to comment Share on other sites More sharing options...
jerseyglock Posted March 28, 2021 Share Posted March 28, 2021 Weak recoil spring. Link to comment Share on other sites More sharing options...
Edwards30 Posted March 28, 2021 Share Posted March 28, 2021 +1 on recoil spring. Reminds me I should change mine. Link to comment Share on other sites More sharing options...
Flea Posted March 28, 2021 Author Share Posted March 28, 2021 54 minutes ago, jerseyglock said: Weak recoil spring. A Wolf spring wears out after only 3,000 rounds? Link to comment Share on other sites More sharing options...
jerseyglock Posted March 28, 2021 Share Posted March 28, 2021 (edited) 1 hour ago, Flea said: A Wolf spring wears out after only 3,000 rounds? Test it with your stock recoil assembly and see if slide goes into battery. If not, then weak spring or guide rod is bend. Edited March 28, 2021 by jerseyglock Link to comment Share on other sites More sharing options...
Aircooled6racer Posted March 28, 2021 Share Posted March 28, 2021 Hello, If the magazine has no rounds in it the slide stop is riding on the slide causing friction. Thanks, Eric Link to comment Share on other sites More sharing options...
Flea Posted March 28, 2021 Author Share Posted March 28, 2021 2 hours ago, Aircooled6racer said: Hello, If the magazine has no rounds in it the slide stop is riding on the slide causing friction. Thanks, Eric This is with a full mag of dummy rounds. Link to comment Share on other sites More sharing options...
Flea Posted March 28, 2021 Author Share Posted March 28, 2021 Well I probably should have taken off the slide before posting the first video. When I did take off the slide and pulled out my after-market SS captured guide rod, the spring and the cap flew off. I was shooting yesterday and noticed a small screw sitting on the port bench and had no idea what it was. I didn't even know if it was from my gun but I took it home just in case. Well that screw is the one that holds the guide rod cap in place and somehow it came out of the gun while shooting (it had some V3 on it). So I thought that must have been what was causing the sticking. I put it back together again and it was still sticking. No sticking with the factory guide rod or a 14lb Wolf spring on my SS guide rod. Live and learn. Link to comment Share on other sites More sharing options...
rootacres Posted March 28, 2021 Share Posted March 28, 2021 Im not sure Id even worry about it. Has the pistol ever had a failure to feed or go into battery? Ive ran the same two 11lb/13lb ISMI recoil springs in my G34 for ~15k to ~20k rounds and never experienced problems. Especially with a full mag inserted, that's a lot to ask. The point of a reduced power recoil spring is to not have the slide slam home as hard as factory. Link to comment Share on other sites More sharing options...
ima45dv8 Posted March 28, 2021 Share Posted March 28, 2021 6 hours ago, Flea said: A Wolf spring wears out after only 3,000 rounds? It can. You have to check it to know. With any aftermarket parts used in the recoil spring assembly they, too, have to be considered as a possible cause. Here's a short video that mirrors what is taught at the factory and armorers courses, but this guy is not publicizing himself as an employee or either. It a minute and a half. Nice and short. Link to comment Share on other sites More sharing options...
Southpaw Posted March 28, 2021 Share Posted March 28, 2021 As said, it's the recoil spring. Aftermarket Glock recoil springs aren't really designed for the Gen 5, although lots of people are using them on Gen 5s anyway. The Gen 5 17/34 recoil spring is longer than previous generations, so if using an aftermarket spring designed for Gen 1-4 Glocks, when in battery the spring is under less pre-tension holding the slide closed. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted March 28, 2021 Share Posted March 28, 2021 Hello, the length of the area that the spring has to work with on the Gen 5 is only about 0.200" longer than the Gen 1-3. I have not tested the installed tension difference between the Gen 1-3 and Gen 5 when installed in the pistol using a Gen 1-3 spring. Thanks, Eric Link to comment Share on other sites More sharing options...
Intheshaw1 Posted March 29, 2021 Share Posted March 29, 2021 1 hour ago, Southpaw said: As said, it's the recoil spring. Aftermarket Glock recoil springs aren't really designed for the Gen 5, although lots of people are using them on Gen 5s anyway. The Gen 5 17/34 recoil spring is longer than previous generations, so if using an aftermarket spring designed for Gen 1-4 Glocks, when in battery the spring is under less pre-tension holding the slide closed. I talked to Mike at Jentra a bit about this and they should be releasing a gen 5 specific guide rod shortly. He said the gen 5s are a little longer than the gen 4s. Link to comment Share on other sites More sharing options...
rooster Posted March 29, 2021 Share Posted March 29, 2021 Carver custom has specific rods for the 34.5. I have one each for the ISMI and Wolff springs. His bushing fits both rods. Been using them for over 6 months with no issues. The striker and recoil springs work against each other. You have to find the right combo to reliably lock the slide. The factory 5lb striker with the oem 17 lb recoil is about a 3to1 ratio. I try and keep that. So for me that was a 4.5 striker with a 13lb recoil. Link to comment Share on other sites More sharing options...
Flea Posted March 29, 2021 Author Share Posted March 29, 2021 9 hours ago, rooster said: Carver custom has specific rods for the 34.5. I have one each for the ISMI and Wolff springs. His bushing fits both rods. Been using them for over 6 months with no issues. The striker and recoil springs work against each other. You have to find the right combo to reliably lock the slide. The factory 5lb striker with the oem 17 lb recoil is about a 3to1 ratio. I try and keep that. So for me that was a 4.5 striker with a 13lb recoil. I was looking at the Wolff website last night, and unless I missed something, it said this about their recoil springs: NOTE: Not for use in Generation 4 & 5 models. Lots of you seem to be using Wolff springs in the 34/5 so what's the deal? Thx Link to comment Share on other sites More sharing options...
rooster Posted March 29, 2021 Share Posted March 29, 2021 8 minutes ago, Flea said: I was looking at the Wolff website last night, and unless I missed something, it said this about their recoil springs: NOTE: Not for use in Generation 4 & 5 models. Lots of you seem to be using Wolff springs in the 34/5 so what's the deal? Thx Have no idea. Been using ISMI and Wolff for about 8 months with no problems. As a matter of fact at 25 yards my groups were all over a uspsa target. When I switched to a 13 lb. spring I was able to keep them all in the A zone. The Carver guide rod is longer than the gen 3 ( don’t know about the 4), but the length of spring that I’m using is the same in both guns. Link to comment Share on other sites More sharing options...
Flea Posted March 29, 2021 Author Share Posted March 29, 2021 2 hours ago, rooster said: Have no idea. Been using ISMI and Wolff for about 8 months with no problems. As a matter of fact at 25 yards my groups were all over a uspsa target. When I switched to a 13 lb. spring I was able to keep them all in the A zone. The Carver guide rod is longer than the gen 3 ( don’t know about the 4), but the length of spring that I’m using is the same in both guns. I spoke to the GM at Wolff and he set my straight. Even though the Wolff website says the springs aren't for Gen 4 or 5 guns, that's not totally accurate. Their springs will work in Gen 4 and 5 guns as long as you have a guide rod that will work in a Gen 4 or 5 gun. Meaning the after-market GR has something on the end that will capture the spring and the GR is the appropriate diameter. Link to comment Share on other sites More sharing options...
RePete Posted March 29, 2021 Share Posted March 29, 2021 What happens when you slingshot the slide? If it is still sticking it's more than likely the recoil spring as previously stated. Link to comment Share on other sites More sharing options...
Honeybooboo Posted April 2, 2021 Share Posted April 2, 2021 All my Glocks with lower recoil springs are like this. Link to comment Share on other sites More sharing options...
matto6 Posted May 25, 2021 Share Posted May 25, 2021 (edited) I'm late to the party, but I'd like to add... drop of oil on the locking block, and on the barrel where it interfaces with the locking block, and it might fix it. My new Gen 5 G34 did the same thing with a new 13 lbs ISMI spring. A little oil in the right place and it closed just fine, even in slow motion. The 15 pound spring worked with or without oil, but sometimes malfunctioned when I had 1 in the chamber and was using the brand new 10-round mags (NY). After they break in, and I use a slightly lighter striker spring, 15 might be an option again. Edited May 25, 2021 by matto6 Link to comment Share on other sites More sharing options...
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