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Posted: 2/28/2016 9:33:14 PM EDT
| Just picked up a lower today, and the standard 1" grip bolts don't fit, due to the lack of threads in the last 1/4" of the hole. Was this a manufacturing error or was it intentional? I'm most likely just going to tap it and put the rest of the threads in, but I'm really curious as to what happened, as a bit of research says it's a common thing. |
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I used a bunch of washers to take the slack out on my Anderson lower. I've seen so many complaints on this; why won't the company just fix it? Guess you didn't have a hack saw handy? A lot of aftermarket grips include a shorter machine screw. The Anderson parts kits include a screw that works. Or, tap the hole. This really isn't a big issue... |
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I believe it's common for Anderson lowers to not be threaded all the way. The longer grip bolts will need it tapped on through, but the bolt that comes with Mapgul grips will work as is, they are shorter. I have a PSA lower kit and the screw is an inch long. Is Anderson the only company that does this? Makes no sense why they wouldn't thread it the last 1/4. It's a quick fix for me though as I have a tap and drill press available. |
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Guess you didn't have a hack saw handy? A lot of aftermarket grips include a shorter machine screw. The Anderson parts kits include a screw that works. Or, tap the hole. This really isn't a big issue... Quoted:
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I used a bunch of washers to take the slack out on my Anderson lower. I've seen so many complaints on this; why won't the company just fix it? Guess you didn't have a hack saw handy? A lot of aftermarket grips include a shorter machine screw. The Anderson parts kits include a screw that works. Or, tap the hole. This really isn't a big issue... My parts kit wasn't an Anderson, but it's good to know their kit comes with a bolt that will work. I could've hacked the bolt, but the washer solution was easier since I save every nut bolt and washer I find. I had zero interest in tapping the hole. And I agree - this isn't a big issue, but Anderson shouldn't want to make their customers take steps that would be unnecessary if they had bought from a competitor. It's a big enough deal that I'll think twice before buying another one of their lowers. |
I just keep a small drawer with extra screws in it that will fit the grip hole on Anderson as well as others I have run into over the years, it certainly would not keep me from buying another one of their lowers. I do find it a bit silly how big of a deal this is to some people.
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My parts kit wasn't an Anderson, but it's good to know their kit comes with a bolt that will work. I could've hacked the bolt, but the washer solution was easier since I save every nut bolt and washer I find. I had zero interest in tapping the hole. And I agree - this isn't a big issue, but Anderson shouldn't want to make their customers take steps that would be unnecessary if they had bought from a competitor. It's a big enough deal that I'll think twice before buying another one of their lowers. Quoted:
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I used a bunch of washers to take the slack out on my Anderson lower. I've seen so many complaints on this; why won't the company just fix it? Guess you didn't have a hack saw handy? A lot of aftermarket grips include a shorter machine screw. The Anderson parts kits include a screw that works. Or, tap the hole. This really isn't a big issue... My parts kit wasn't an Anderson, but it's good to know their kit comes with a bolt that will work. I could've hacked the bolt, but the washer solution was easier since I save every nut bolt and washer I find. I had zero interest in tapping the hole. And I agree - this isn't a big issue, but Anderson shouldn't want to make their customers take steps that would be unnecessary if they had bought from a competitor. It's a big enough deal that I'll think twice before buying another one of their lowers. I seriously doubt it has anything to do with using a proprietary Anderson bolt forcing consumers to buy their lpk. A ton of suppliers carry them and do not sell Anderson lpk's. I will check my cmmg lpk's but, I think they are also short. |
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Yep, or go to Lowe's and buy a bag of bolts for .08 a piece. Quoted:
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Just spend $4 on a 1/4-28 tap. Yep, or go to Lowe's and buy a bag of bolts for .08 a piece. Lowes and Home Depot don't sell 3/4" 1/4-28 bolts. Trust me, I looked for one for a long time before I just ordered a magpul grip that came with one 
I hate living in a place without an Ace Hardware. There is literally nowhere in this town that has a good selection of bolts. |
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Hacksaw and file to clean up the first thread on the shorter bolt.
Or use the bolt that came with the Anderson lpk or Magpul grip. Or stack up a few washers. Or tap the hole the rest of the way. This is a non issue. It's a $40 lower. Are we all forgetting that before BHO became the world's most successful gun salesman lowers were $150? I'll take the current situation and deal with a few weird effects thanks... |
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Hacksaw and file to clean up the first thread on the shorter bolt. Or use the bolt that came with the Anderson lpk or Magpul grip. Or stack up a few washers. Or tap the hole the rest of the way. This is a non issue. It's a $40 lower. Are we all forgetting that before BHO became the world's most successful gun salesman lowers were $150? I'll take the current situation and deal with a few weird effects thanks... It's a non-issue as long as you are aware of it. If you don't know about it and you are trying to tighten a GI pistol grip screw it's very easy to destroy the threads in the lower. |
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Hacksaw and file to clean up the first thread on the shorter bolt. Or use the bolt that came with the Anderson lpk or Magpul grip. Or stack up a few washers. Or tap the hole the rest of the way. This is a non issue. It's a $40 lower. Are we all forgetting that before BHO became the world's most successful gun salesman lowers were $150? I'll take the current situation and deal with a few weird effects thanks... I remember Palmetto selling lowers between 40 and 50 that were in spec also. |
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It's not just Anderson. I have had to tap a lot of lowers I have purchased over the years, long before Anderson came onto the scene. Buy a tap, some Tap Magic, and be done with it.
If you do not feel confident in tapping the hole, go buy a bag full of 1/4 x 28 x 3/4 Allen head bolts and never worry about a short threaded lower again. By the way, any man (or woman) who cannot finish tapping the hole in an aluminum lower is in serious danger of having his man card pulled and darned sure does not need to be building AR-15s.
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It's a non-issue as long as you are aware of it. If you don't know about it and you are trying to tighten a GI pistol grip screw it's very easy to destroy the threads in the lower. Bingo! I wonder how many people have done this or come close to doing it. There's no reason anyone should have to drill, tap or do any machining to a 100% lower, regardless of how inexpensive it is. |
| I believe that if you look deep enough, you'll find that Anderson is the only mfg threading the screw hole to the correct depth. Years ago, lower parts kits marketers decided to switch grip screws to 1" due to cost savings, which also explains why Magpul screws are 3/4" rather than 1". But yeah, if I was running Anderson we would adjust the machining process to shut people up. |
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Bingo! I wonder how many people have done this or come close to doing it. There's no reason anyone should have to drill, tap or do any machining to a 100% lower, regardless of how inexpensive it is. Quoted:
It's a non-issue as long as you are aware of it. If you don't know about it and you are trying to tighten a GI pistol grip screw it's very easy to destroy the threads in the lower. Bingo! I wonder how many people have done this or come close to doing it. There's no reason anyone should have to drill, tap or do any machining to a 100% lower, regardless of how inexpensive it is. We are not talking about 100% lowers. |
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I believe that if you look deep enough, you'll find that Anderson is the only mfg threading the screw hole to the correct depth. Years ago, lower parts kits marketers decided to switch grip screws to 1" due to cost savings, which also explains why Magpul screws are 3/4" rather than 1". But yeah, if I was running Anderson we would adjust the machining process to shut people up. Wrong. Gov. drawing clearly shows it tapped through. Older Colt grips screws were actually a hair longer than 1". |
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We are not talking about 100% lowers. Quoted:
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It's a non-issue as long as you are aware of it. If you don't know about it and you are trying to tighten a GI pistol grip screw it's very easy to destroy the threads in the lower. Bingo! I wonder how many people have done this or come close to doing it. There's no reason anyone should have to drill, tap or do any machining to a 100% lower, regardless of how inexpensive it is. We are not talking about 100% lowers. Of course we are talking about 100% lowers. I don't think Anderson even offers an 80% product. Someone please correct me if I'm wrong. |
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We are not talking about 100% lowers. Quoted:
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It's a non-issue as long as you are aware of it. If you don't know about it and you are trying to tighten a GI pistol grip screw it's very easy to destroy the threads in the lower. Bingo! I wonder how many people have done this or come close to doing it. There's no reason anyone should have to drill, tap or do any machining to a 100% lower, regardless of how inexpensive it is. We are not talking about 100% lowers. Of course we are talking about 100% lowers. I don't think Anderson even offers an 80% product. Someone please correct me if I'm wrong. |
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Of course we are talking about 100% lowers. I don't think Anderson even offers an 80% product. Someone please correct me if I'm wrong. Quoted:
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It's a non-issue as long as you are aware of it. If you don't know about it and you are trying to tighten a GI pistol grip screw it's very easy to destroy the threads in the lower. Bingo! I wonder how many people have done this or come close to doing it. There's no reason anyone should have to drill, tap or do any machining to a 100% lower, regardless of how inexpensive it is. We are not talking about 100% lowers. They do make 80% lowers but www.brownells.com/rifle-parts/receiver-parts/receivers/lower-receivers/ar-15-80-lower-receiver-prod75038.aspx?avs%7cSpecial-Filters_1=Salezz1zzClearance&cm_sp=Secondary+Banner-_-Lower+Homepage+Feature-_-HHP_Sale]www.brownells.com/rifle-parts/receiver-parts/receivers/lower-receivers/ar-15-80-lower-receiver-prod75038.aspx?avs%7cSpecial-Filters_1=Salezz1zzClearance&cm_sp=Secondary+Banner-_-Lower+Homepage+Feature-_-HHP_Sale]www.brownells.com/rifle-parts/receiver-parts/receivers/lower-receivers/ar-15-80-lower-receiver-prod75038.aspx?avs%7cSpecial-Filters_1=Salezz1zzClearance&cm_sp=Secondary+Banner-_-Lower+Homepage+Feature-_-HHP_Sale The topic is 100% lowers I thought. |
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Of course we are talking about 100% lowers. I don't think Anderson even offers an 80% product. Someone please correct me if I'm wrong. Quoted:
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It's a non-issue as long as you are aware of it. If you don't know about it and you are trying to tighten a GI pistol grip screw it's very easy to destroy the threads in the lower. Bingo! I wonder how many people have done this or come close to doing it. There's no reason anyone should have to drill, tap or do any machining to a 100% lower, regardless of how inexpensive it is. We are not talking about 100% lowers. Of course we are talking about 100% lowers. I don't think Anderson even offers an 80% product. Someone please correct me if I'm wrong. Yeah, I'm still scratching my head wondering why DaveP1 thinks we're not talking about complete (100%) lowers |
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Wrong. Gov. drawing clearly shows it tapped through. Older Colt grips screws were actually a hair longer than 1". Quoted:
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I believe that if you look deep enough, you'll find that Anderson is the only mfg threading the screw hole to the correct depth. Years ago, lower parts kits marketers decided to switch grip screws to 1" due to cost savings, which also explains why Magpul screws are 3/4" rather than 1". But yeah, if I was running Anderson we would adjust the machining process to shut people up. Wrong. Gov. drawing clearly shows it tapped through. Older Colt grips screws were actually a hair longer than 1". Wrong. Mil Spec applies to the screw itself, not the thread depth. |
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Wrong. Mil Spec applies to the screw itself, not the thread depth. Quoted:
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I believe that if you look deep enough, you'll find that Anderson is the only mfg threading the screw hole to the correct depth. Years ago, lower parts kits marketers decided to switch grip screws to 1" due to cost savings, which also explains why Magpul screws are 3/4" rather than 1". But yeah, if I was running Anderson we would adjust the machining process to shut people up. Wrong. Gov. drawing clearly shows it tapped through. Older Colt grips screws were actually a hair longer than 1". Wrong. Mil Spec applies to the screw itself, not the thread depth. So tell me how you're going to thread a 1" screw into 3/4" threads? |
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Yeah, I'm still scratching my head wondering why DaveP1 thinks we're not talking about complete (100%) lowers Interesting that they don't offer, what I received in the mail today. My last 5 80% lowers came from Brownell's Don't scratch to long in the same place, you will make it raw! That said, I went back and looked at the thread and honestly, I don't remember posting that message yesterday, in fact it would have been very hard for me to post that message as I was on a frozen lake fishing until about 11 pm last night! Looks like some games are being played...???? |
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