commanderjjones

Good to know that's an option. So if there are companies making pins that are specific to anti-walk and anti-rotation, I assume this must be somewhat of a common issue? Maybe not "common", but also not highly unusual? Although I already knew it's something that anyone should always do, I'll definitely be giving my rifle a quick "once over" from this point forward. I think it's sort of like driving a car.....we all know you're "supposed" to always do a quick walk around before driving it, but how many people ACTUALLY do that?

Thanks a lot for that info'. I'm still learning. Yes, it's the standard trigger. It seemed to "pop" into a detent when I pushed it back in and it didn't show signs of movement after 40 rounds. I assume it's good for now, but I'll definitely keep a very close eye on it. I've got a LaRue trigger on the way (it's been on order for 6 weeks today), so I'm hoping that will be here any day now and probably won't bother taking the trigger apart until I receive the new one.

Just a good news update............. Evidently the LPGB alignment was causing the FTF/FTE issue because it went away after I removed and reinstalled it. I measured it as precisely as I could (with digital calipers) and swear it is back in the exact same spot as it originally was, so maybe there was a small piece of trash that was dislodged in the R&R process??? At any rate, that is resolved. The double fire issue still persisted in the initial test, then I discovered that the hammer pin had worked it's way loose. Although I hadn't done anything to cause that to happen, failure to catch that was my newbie mistake. After correcting that, it is now functioning 100%. I fired 2 full mags of 20 rounds each (1 mag fired slowly with pauses between each shot, and the other in rapid succession) without a single firing or feed issue. At last, I'm finally confident enough to step in the woods with this thing. I'm a happy camper.

No, I didn't put it together. Other than the LPGB, is it a factory fresh Oracle......only about 2 months old. Yeah, double firing is a HUGE concern. Couldn't help but think about the possibility of it emptying a clip without me being ready.....or possibly worse. I've got a LaRue trigger on order (ordered it about 4 weeks ago), but haven't received it yet......and I haven't been into or disassembled ANYTHING in the lower yet.

I realize that's a possibility, but thanks for the warning/advice. I'm a master metal fabricator, so I can do this without damaging the port or rifle. I haven't had the chance to shoot it yet, but I'm almost certain that was not the problem. I marked the GB before I took it apart and it was definitely indexed correctly. Plus the port in the gas block is more than double the size of the barrel port, so alignment would've had to have been significantly off to be blocking any of the barrel port. I'll shoot it tonight (if I don't get rained out) to confirm, but I'm afraid that I'm still looking for a solution. I forgot one VERY important detail. It double fired 3 times (6 shots) in the last test of 20 rounds.....after I installed the new double extractor spring. I'm far from an expert, but could it be possible that it's short cycling so short that it wasn't engaging the disconnector? Am I wrong in thinking that a short cycle "could" cause both issues (FTE/FTF jam and the double fire)? I'm going to order another mag to test (still using the factory DPMS metal 20 round). Any recommendations on the most reliable?

Awesome! Thanks for the link. Man, that's so simple that I can't believe that I didn't think of that. Hell, I can make one of those at home with a short piece of the proper size welding rod.

Thanks for the response. Yeap, unfortunately right now it's exactly what you said......a big paperweight. I could shoot quicker with a bolt action. I lubed it up pretty wet. Not what I would consider "dripping", but what I would normally consider on the verge of excessive. I'm normally much more sparing on my other weapons. I'll check the extractor and spring again before I do what I was dreading....taking the LPGB back off. Is there a trick or alignment tool that I can use to make sure that the GB is "perfect", or should I just use the tape and pencil mark method? I'm not an AR guru, but am very mechanically inclined and have a good eye for level, plumb, and centered......so I doubt it's off by much. Then again, I guess it doesn't take much at all to block the necessary pressure.

I got the rifle about two months ago and immediately installed a lower profile gas block so I could install a 15" handguard. Other than bolt-ons (scope, bi-pod, etc...), the rifle is all stock and using the factory metal DPMS 20 round mag. I never shot it before installing the LPBG, so I'm not sure if it would have cycled fine in stock form. Functioned fine for the first 20 rounds of cheap UMC FMJ's. Shot 20 rounds of Rem CoreLokt 150gr and the FTE and/or FTF started, but only about every 4th shot or so. Now shooting Federal 168gr Sierra Match Kings, it progressively got worse with the 3rd clip, until I was basically shooting a bolt action by the 4th clip. Found a broken extractor spring when I took it apart to clean and lube. So I replaced that with a double spring from Sprinco and now it will eject again, but is still getting some FTF jamming. Difficult to tell but I think that maybe the bolt is not cycling far enough to eject the spent case, but far enough to feed a second, so they end up jammed together. Where should I start next? Should I try a P-Mag, or could I have my gas block misaligned? I'll be honest that I installed the LPGB before seeing a couple of posts and videos about the importance of precise alignment. So I just centered the screws in the recesses, shoved it back against the barrel shoulder, and tightened it up (added blue Loktite to the screws). I really hate to take the guard back off to check that (just painted the entire rifle), but my gut tells me that's my most likely culprit. This thing is really starting to piss me off. Never had ANY of my rifles give me this sort of issue (much less a BRAND NEW one), but I have a feeling that my ignorance may have caused this.

Will do. I should have the springs tomorrow, but probably won't have time to shoot until this weekend.

That's good to know. Looks like they have a decent selection of parts and are reasonable. Thanks for the link.

I don't shoot much (if any) steel, but I do reload and don't want any damaged cases. From an engineering standpoint, the double spring just seems like a more logical approach. I'll try it and see if it's all that I expect.......if not, I've wasted less than $10.

Yea, I know. I assume the original breaking was just a fluke and it would probably run indefinitely with the stock DPMS spring.......but since the original has already broken and it wouldn't be worth my time to contact DPMS, I'm going to upgrade since I'm replacing it anyway. Just an FYI.........Sprinco supplies the springs to LaRue (they referred me) and they do have a double spring kit that fits the DPMS......and it was only $9.90 with shipping.

Well, the LaRue double spring setup is for their proprietary BCG and is not compatible with the DPMS, so now it's back to searching other options.

After only 40 shots, I'm surprised to find that the extractor spring in my new Oracle is broken. I've seen a few different options out there but, after seeing more than one comment/review about the o-ring mod' leaving a higher than usual amount of brass shavings on the bolt face, I'm not keen on the idea of adding an o-ring to the spring. So I'm leaning toward installing the LaRue double spring. I'm far from being an AR authority and am still learning, but that seems to make way my sense to me. Any thoughts or personal experience with that???

Thanks guys! I plan to bake it this evening and hopefully the rest of my parts will get here in the next couple of days so I can shoot it this weekend. I really wanna re-zero my scope after having it off during the painting process. Even though it "should" be really close, I don't like stepping in the woods without being certain. A head shot is the way to go on big hogs.