I'm thinking of selling

[rojodiablo]

NOT this. Bill does a good job smoothing out triggers but cannot guarantee he won't cut through the case hardening. If the case hardening is removed, it won't be long before the trigger starts to double & triple

It would be thousands of rounds before it would **** itself like that. The mechanism parts are hardened steel, not mild steel. Just rubbing off the hardfacing on a trigger is not going to turn it into a pot metal part that will fall apart.
I have speargun mechanisms which are holding down up to 700lb of force, direct on the sear. And they are not heat treated, but just 17-4SS in most cases. Which, is softer than the 4130 that is used for trigger mechanisms. After a couple thousand shots over say 12-15 years, we might have to clean up the edge on the sear, because we may develop a misfire situation under full load. In most cases, it's actually the wrist pin that the sear rides on which wears/ bends from the pressure.

By comparison, a rifle sear like these has about ?? 8-15lb of measured force on it.

 

[Little Creek]

Here are my conclusions from today. First off, I'm not the best shot but I knew that . Other than that all I can figure is my gun likes to be clean, more so than my other guns. I also tightened up the screws on the Larue mount for the Accupoint. I don't know if they were loose enough to make a difference but it held a tighter pattern today. One thing I really noticed is I need a better trigger and that goes for both guns. Both guns shot about the same at 50 yds with either scope. The widest group was 2" if you discount the flyers. I had some keyholes with both guns. So I guess my next move is new triggers for both rifles. Overall I'm happy with today's results so the M&P is staying at home .
On a side note, today was a good day for my Glock 42 also. It is now broken in and shooting without issue.

If any of the screws on the scope mount system are loose, you accuracy will suffer big time. I had a quick release Burris AR scope mount (PEPR?)that I never could get to work on my M&P15 Sport. Now with a Leupold Mark 2 mount, It shoots great.

BTW, my G42 is one sweet shooting mouse gun. My wife and college age daughter shot it suprisingly well right off the bat. It is a great summer time concealed carry pistol for summer time in the deep south.

 

[MistWolf]

It would be thousands of rounds before it would **** itself like that. The mechanism parts are hardened steel, not mild steel. Just rubbing off the hardfacing on a trigger is not going to turn it into a pot metal part that will fall apart.
I have speargun mechanisms which are holding down up to 700lb of force, direct on the sear. And they are not heat treated, but just 17-4SS in most cases. Which, is softer than the 4130 that is used for trigger mechanisms. After a couple thousand shots over say 12-15 years, we might have to clean up the edge on the sear, because we may develop a misfire situation under full load. In most cases, it's actually the wrist pin that the sear rides on which wears/ bends from the pressure.

By comparison, a rifle sear like these has about ?? 8-15lb of measured force on it.

Spearguns are single shot weapons, not self loaders. More than a few AR shooters have reported signs of excessive wear from AR triggers that had been stoned through the case hardening to the unhardened material below, leading to doubling and tripling after only a few hundred rounds. Stoning the sears of standard AR triggers can lead to unsafe operation of the fire control group

 

[copemech]

Spearguns are single shot weapons, not self loaders. More than a few AR shooters have reported signs of excessive wear from AR triggers that had been stoned through the case hardening to the unhardened material below, leading to doubling and tripling after only a few hundred rounds. Stoning the sears of standard AR triggers can lead to unsafe operation of the fire control group

IMPROPER stoning, yes, because many get the angles wrong. I am not scared of mine, and it does retain positive sear angle, I checked.

If mine ever wears out I doubt I could afford the ammo.

Doubles and triples sound like a sorta kinda fun thing to me anyway!

 

[MistWolf]

IMPROPER stoning, yes, because many get the angles wrong. I am not scared of mine, and it does retain positive sear angle, I checked.

If mine ever wears out I doubt I could afford the ammo.

Once the case hardening is cut through, the sears wear quick. Trouble is, the thickness of the case hardening of an AR trigger varies. It can be reasonably deep or it can be really shallow. It's a **** shoot. You'll never know how much is left, if any, after stoning or polishing. Once the case hardening is cut through, the sears will wear rapidly. It won't take many shots for things to start going wrong

Doubles and triples sound like a sorta kinda fun thing to me anyway!

Not when it lands you in Club Fed. It's also unsafe. Be that as it may, it's your money, it's your rifle, it's your life. Just trying to help my fellow shooters stay out of trouble

 

[Little Creek]

Once the case hardening is cut through, the sears wear quick. Trouble is, the thickness of the case hardening of an AR trigger varies. It can be reasonably deep or it can be really shallow. It's a **** shoot. You'll never know how much is left, if any, after stoning or polishing. Once the case hardening is cut through, the sears will wear rapidly. It won't take many shots for things to start going wrong



Not when it lands you in Club Fed. It's also unsafe. Be that as it may, it's your money, it's your rifle, it's your life. Just trying to help my fellow shooters stay out of trouble

I suggest that if money is an object, buy an ALG Defense trigger rather than have a "trigger Job" done on the original mil-spec trigger. As for me I use the G2S, SSA, and SD-E.

 

[LASigmon]

My SSA-E should be here tomorrow

 

[Fourth Horseman]

My SSA-E should be here tomorrow

Nice! That's my next upgrade as well.

 

[HYRYSC]

In kinda late on this reply, but if you are having FTF's, you should remove the firing pin spring. I shot some hard military primer rounds when I first got mine and I barely got it to fire.

Well I knew that wasn't going to work, so I broke the bolt down to see what was going on. None of my other AR 10 style rifles had a firing pin spring, so I didn't think that it was necessary on this one either.

I removed it, put everything back together and so far it has been 100% on everything from handload's to steel case **** to hard military primers.

 

[LASigmon]

My FTF's were failure to feed's. I think I may have solved the mystery why it only happened to the guys shooting my gun and not me. I believe they were holding the magazine instead of the magazine well when they were shooting. Neither of them had shot an ar type rifle before.

 

[bergermeister]

BAD MOVE

In kinda late on this reply, but if you are having FTF's, you should remove the firing pin spring. I shot some hard military primer rounds when I first got mine and I barely got it to fire.

Well I knew that wasn't going to work, so I broke the bolt down to see what was going on. None of my other AR 10 style rifles had a firing pin spring, so I didn't think that it was necessary on this one either.

I removed it, put everything back together and so far it has been 100% on everything from handload's to steel case **** to hard military primers.

That spring is in the MP-10 for a purpose. Guards AGAINST out-of-battery detonation
[read 35% harder hammer fall: HIPERTOUCH® 24 3G - 3Gun AR15/10 Fire-Control Drop-In 24C and 243G]

 

[LASigmon]

Just finished putting in the Geissele. Wow. I can't wait to shoot it. I've never had a trigger this nice. The Windham ar15 might have to get one too

 

[LASigmon]

I finally got to try out the new trigger. I believe it did make a difference. I don't know what kind of ammo I used other than it had ballistic tips. A friend of mine gave it to me. This was at 100 yds. The first 3 shots that I covered up was a 1.5" group then I adjusted my scope because they were low. The next 3 shot group is the one touching the bullseye and is under an inch. The next 4 shots above that are a 1.5". The total of all 7 shots after the scope adjustment is a 2" group. Yeah, I'm keeping it

 

[copemech]

I finally got to try out the new trigger. I believe it did make a difference. I don't know what kind of ammo I used other than it had ballistic tips. A friend of mine gave it to me. This was at 100 yds. The first 3 shots that I covered up was a 1.5" group then I adjusted my scope because they were low. The next 3 shot group is the one touching the bullseye and is under an inch. The next 4 shots above that are a 1.5". The total of all 7 shots after the scope adjustment is a 2" group. Yeah, I'm keeping it

1.5 cold, whatever ammo, then a small group?

Yep! Keeper!