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[ARCHIVED THREAD] - Which LPK? (Page 1 of 2)
Posted: 5/15/2016 3:26:52 PM EDT
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I am in the process of gathering parts for a build, and need help deciding on the LPK. I would prefer if it only came with the basics (Ex. CMMG Builder's), and want the highest possible quality.
Right now, my top two choices are CMMG and Aero Precision. Which should I get between these two? What are some other good options? Any help is appreciated. ETA: Trigger is not a factor, as I have a Geissele SSA. |
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Any.
My only advice to you on lower parts kits: if the first one you get doesn't work... get a different one to replace the first one you removed from your weapon. If you should need another lower parts kit after this incident (should one occur), I would refrain from buying any lower parts kits with which you may have had a previous negative experience . |
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Quoted:
Any. My only advice to you on lower parts kits: if the first one you get doesn't work... get a different one to replace the first one you removed from your weapon. If you should need another lower parts kit after this incident (should one occur), I would refrain from buying any lower parts kits with which you may have had a previous negative experience . So what you're saying is: - You have no advice on where to get one - Get any one from anywhere - If you don't like the one you got, don't buy one from there again Helpful. 
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I got one of these last week and was pleasantly surprised how good the trigger is.
http://palmettostatearmory.com/psa-defender-moe-lower-parts-kit.html |
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Probably should have said this, but the trigger is not important. I already have a Geissele SSA. Then something like this that currently has free shipping may work. http://palmettostatearmory.com/psa-classic-lpk-w-o-fire-control-group.html |
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We recently bought an anderson LPK for a friends build.
When i assembled it for him, the trigger was a silver color, and had a goofy looking hammer. The trigger is ALL kinds of jacked up and will not reset properly on occasion. I've not seen an LPK OEM trigger that looked like this before, but the pull and reset were complete shit. I'd stay away from Anderson ones. He ordred a Larue MBT. We will replace it with a milpsec trigger from my box until his MBT arrives |
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Brownells sells DPMS LPKS without the FCG sometimes for lke 24 bucks...deff the way to go  Then put the grip you like on it(if you don't like the A2) and the trigger of your choiceThis I bought like of these in the last year. All are fine. Add a QMS trigger and have a superb basic LPK |
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I only use WOA, Colt, DD or LWRC when possible, get a lpk without the trigger and pick the trigger you want good single stage, Geiselle ALG good 2 stage, KAC ^I Second this. I picked up a WOA kit without FCG since I have a Larue MBT...went together fine and parts look great. |
| I've used Stag, DD, CMMG, and Spikes without a hitch. I recently ordered 3 lower priced Anderson vitals LPK assuming all kits are created equal. One had no problems. One was missing a bolt catch plunger. One had an out of spec mag release that impacts function (snags on lower receiver). Maybe I was just unlucky, but I won't be going the budget route again. |
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Over the years I've built everything with DD and Stag LPKs.
I have enough spares that I'll probably never need another, but if I was buying right now, I'd probably grab a no trigger LPK from ALG and slap in my favorite flavor of Geissele. http://algdefense.com/ar15-m4-mil-spec-lower-parts-kit-less-trigger-less-grip.html OOS right, but you can get one from Primary Arms (with grip) in the mean time. |
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I bought 2 Sionics kits with their enhanced triggers for a few builds. Really nice parts, trigger is crisp and smooth! I'll second Sionics. I recently installed their kit with enhanced trigger and will be buying more kits. Very pleased overall and the trigger is great. |
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So what you're saying is: - You have no advice on where to get one - Get any one from anywhere - If you don't like the one you got, don't buy one from there again Helpful. Quoted:
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Any. My only advice to you on lower parts kits: if the first one you get doesn't work... get a different one to replace the first one you removed from your weapon. If you should need another lower parts kit after this incident (should one occur), I would refrain from buying any lower parts kits with which you may have had a previous negative experience . So what you're saying is: - You have no advice on where to get one - Get any one from anywhere - If you don't like the one you got, don't buy one from there again Helpful. Actually, I said any one of them. If you don't like it then get another one. It's evolution baby. For what it's worth, i don't use lower parts "kits". I buy a trigger and a safety that I require or want, then I fill in the blanks with stuff from Brownells. |
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X2. I was impressed with the stock FCG. Quoted:
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Stag Arms makes a solid one. X2. I was impressed with the stock FCG. Yup. The SBR I'm building consists of what I think is a CMMG LPK (got it from a friend and member here. It's in colored baggies which is typical of CMMG) and the nicely broken in trigger from my Stag which now wear a SSA-E
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I usually get this
kns precision turned parts kit and then a spring kit. That leaves a grip and a trigger and a mag release lever and button |
| I've used a couple Anderson kits without issue so far, but there does seem to be a variance from kit to kit. I always polish the triggers before installing so I cant say what they'd be like out of box. Odin just released a kit for around $60 that i'm interested to try out. They tend to produce quality parts. |
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I pretty much use Aero Precision for all of my LPK needs now. That said, RRA, WOA, BCM, Spike's, CMT/Stag, CMMG, etc. are good to go also. The triggers that have been included in the Aero kits have been the best feeling stock triggers I've felt. The worst triggers I've ever felt were from PSA kits. Pick one that's cheap, and roll with it. Both Rock River and Aero Precision offer LPKs minus the FCG, sine you already have a Geissele to drop in. Bottom of the page: https://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_id=388&CFID=555302262&CFTOKEN=36079635 |
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Boy, Its really getting narrowed down. 
I wonder how many rifles you would have to build and how many rounds fired to truly tell a difference? Not all that many, actually. There are lots or parts in a LPK and therefore lots of possibilities one of them is out of spec. How does the trigger feel during pull, at the break, and at the reset? Is the selector abnormally stiff or sloppy and travelling in and out or detention properly? Takedown/pivot pin travelling in and out of detention properly? How is the finish on the trigger, selector, and bolt catch? Etc, etc, etc... |
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I have used numerous lower parts kits and the best finished parts I have ever used were the KNS parts. As mentioned in a post above, I buy the KNS LPK and then buy all my springs, safety and magazine release from WOA. The White Oak lower parts are very close in finish quality to the KNS parts. Who knows, KNS may even make them for them. The one thing I pay particular attention to is the pivot and take down pins. I want a good snug fit and I want the over finish and detent channel to be smooth. The KNS and WOA pivot and take down pins are that. I don't use mil spec triggers in any of my builds and typically use a specific safety and magazine release so buying the KNS LPK and all the springs separately works well for me.
The Aero LPK trigger is by far the best mil spec trigger I have ever used. You mentioned that you will be using a Geissele trigger so that will not matter. |
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Not all that many, actually. There are lots or parts in a LPK and therefore lots of possibilities one of them is out of spec. How does the trigger feel during pull, at the break, and at the reset? Is the selector abnormally stiff or sloppy and travelling in and out or detention properly? Takedown/pivot pin travelling in and out of detention properly? How is the finish on the trigger, selector, and bolt catch? Etc, etc, etc... Quoted:
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Boy, Its really getting narrowed down.
I wonder how many rifles you would have to build and how many rounds fired to truly tell a difference? Not all that many, actually. There are lots or parts in a LPK and therefore lots of possibilities one of them is out of spec. How does the trigger feel during pull, at the break, and at the reset? Is the selector abnormally stiff or sloppy and travelling in and out or detention properly? Takedown/pivot pin travelling in and out of detention properly? How is the finish on the trigger, selector, and bolt catch? Etc, etc, etc... I think you're right. I guess I was thinking more in terms of reliability. As in a supposedly, "good kit," as opposed to a, " not so good kit." If they install fine they are good to go? |
| PSA recently had these for $52 and free shipping. Includes the polished fire control group and ambi safety. |
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I do like Spikes, and it's not a big deal, but I will add that the safety tends to get hung up on my Hogue grips. It gets kind of annoying, although it's an easy fix.
Also, the new Spikes spider grips suck, I miss their old kits that had a standard grip in it. I get the WOA kit from Adco these days. $42 could be considered on the higher side of prices, but I think it's worth it. One annoying thing to look out for, it's nice to save a few bucks and skip on the grip if you are getting a different one, but some of those kits don't include the grip screw. The WOA kit comes with a grip screw and no grip, which is nice. |
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After playing with a few different kits, I've gone with whatever is the cheapest from a reputable company, which is pretty much all of them right now. I like the DS Arms one I am using in my lower. The safety selector is really "responsive", if that makes sense? Nice audible click. Had no problem assembling it. |
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I've used a couple Anderson kits without issue so far, but there does seem to be a variance from kit to kit. I always polish the triggers before installing so I cant say what they'd be like out of box. Odin just released a kit for around $60 that i'm interested to try out. They tend to produce quality parts. I've had really bad luck with my Anderson parts and ended up replacing almost all of them, including a LPK that has had issues both with the trigger and the bolt catch. The trigger had issues using lightened springs; and then with its stock springs as well. The bolt catch stopped working 100% of the time. I first replaced the trigger with an ALG trigger; I have just recently replaced the rest of the lower parts with an ALG LPK, and have had no issues since. I am still using an Anderson upper receiver; but I will probably not purchase any products from them just to how unlucky I was with their lower parts. To the OP; Palmetto has the best of both worlds right now. They are selling LPK's with PSA lower parts and ALG triggers. $60 or $90 depending on which trigger you get. I have the less expensive trigger and its great; I've fired many M4s and M16s, and in my judgment the ALG trigger feels a lot like the actual military triggers, but smoother and with less slop. |
[ARCHIVED THREAD] - Which LPK? (Page 1 of 2)
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