actionshooter Posted February 24, 2014 Share Posted February 24, 2014 I shouldn't say that, its run great for 3+ years with a lot of rounds through her. But I'm having a problem and maybe someone can throw some ideas at me. My SLP started malfunctioning during a match (of course). The bolt is over running the carrier, or that's what appears to be happening. Every 3-4 round the bolt will close on an empty chamber and a round will be sitting on the lifter/carrier, I cycle the bolt manually and it lifts normal. couple of questions... Is this a part that wears out? What else could it be? And are these parts the same as the Winchester X2? Link to comment Share on other sites More sharing options...
Sarge Posted February 24, 2014 Share Posted February 24, 2014 I'm not a shotgun guy but could it be that the mag spring is worn out and not getting the round into position fast enough? Link to comment Share on other sites More sharing options...
rcollier Posted February 24, 2014 Share Posted February 24, 2014 The lifter spring is prone to getting tired also. Sarge's suggestion and this are some likely causes. Parts are SX2 interchangeable, Brownells has a good diagram my link fu is weak. Link to comment Share on other sites More sharing options...
Custom Rust Posted February 24, 2014 Share Posted February 24, 2014 Start with the magazine spring! Had that same thing happen. Link to comment Share on other sites More sharing options...
openclassterror Posted February 24, 2014 Share Posted February 24, 2014 Usually if the bolt closes empty (meaning it ejected the round), but the next one is on the carrier (meaning it released from the mag tube) that means the bolt did not come far enough to the rear to engage the carrier dog. Usually because the gun is dirty. If you slowly cycle the bolt manually, pull it back far enough to see the ejector and let it forward. The carrier probably won't come up. That is about as far as the bolt is recoiling. Inertia guns act just like this with too light of loads. It is possible that low power loads are to blame, or shooting light loads with the heavy piston. But usually just dirty. Link to comment Share on other sites More sharing options...
assaulter Posted February 24, 2014 Share Posted February 24, 2014 I was going to suggest the carrier dog spring. Link to comment Share on other sites More sharing options...
gerritm Posted February 24, 2014 Share Posted February 24, 2014 My son's brand new SX3 has done this a couple of times. Gun probably had less than 300 rounds at this time. Not sure we ever found the exact cause, but it seemed like if we over lubed the area between the bolt and the carrier where it slides this happened. We have since quit running a large quantity of lube in this area and the problem has stopped for the last few hundred rounds. Not sure this helps, but it now works well. gerritm Link to comment Share on other sites More sharing options...
actionshooter Posted February 25, 2014 Author Share Posted February 25, 2014 I have been playing with it and noticed the carrier dog doesn't lift the carrier (when the assembly is removed from the receiver). It looks like the dog and carrier are fit together with a pin that is staked and there is no tension between the two, is this right? Link to comment Share on other sites More sharing options...
AustinWolv Posted February 25, 2014 Share Posted February 25, 2014 I was going to suggest the carrier dog spring. That was my first thought also. They are known to weaken on this gun. The problems I've had with the SLP were directly fixed by replacing that spring (and not overlubing the piston). Link to comment Share on other sites More sharing options...
actionshooter Posted February 25, 2014 Author Share Posted February 25, 2014 OK guys, I'll try those. Thanks Link to comment Share on other sites More sharing options...
HadleyOwens Posted February 25, 2014 Share Posted February 25, 2014 Carrier dog spring is bad, you need to use two glock extractor springs in place, take one of the springs and cut 2-3 coils off of it. It will last way longer than the factory spring. Also make sure that your carried dog spring wire isn't bent out of shape or starting to flatten out. When that thing breaks in match you will have hella problems!! Hadley O. Link to comment Share on other sites More sharing options...
AustinWolv Posted February 26, 2014 Share Posted February 26, 2014 (edited) I did the (2) Glock extractor spring mod for a while. Worked fine for a while, but then the gun started up pretty darn badly.....the worse it ever acted up. Enough that I was spending a lot of time reading on which shotgun to buy next. Ended up sticking a new factory spring back in and no problems since. Regardless, springs wear out, so keep spares around! Edited February 26, 2014 by AustinWolv Link to comment Share on other sites More sharing options...
HadleyOwens Posted February 28, 2014 Share Posted February 28, 2014 You have to make sure that the carrier dog pin that guides the spring doesnt get out of shape. I always keep a new one around to compare to those that come into the shop for work. It's also worth noting that I have seen the attachment pin that holds the transfer lever onto the lifter gets worn and causes issues as well. Couple all these with a dirty gun and you get multiple malfunctions on a given day. Hadley O. Link to comment Share on other sites More sharing options...
The Donald Posted March 1, 2014 Share Posted March 1, 2014 I did the (2) Glock extractor spring mod for a while. Worked fine for a while, but then the gun started up pretty darn badly.....the worse it ever acted up. Enough that I was spending a lot of time reading on which shotgun to buy next. Ended up sticking a new factory spring back in and no problems since. Regardless, springs wear out, so keep spares around! When I had my SLP every year I tore it down for a real serious cleaning and replaced all the springs. Only way to keep it reliable. All the springs were under $20 from Brownells. Link to comment Share on other sites More sharing options...
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