AR Sponsor
Posted: 8/8/2019 5:20:27 PM EDT
| I have the Anderson AM-15 M4,multi cal open complete lower and was wondering if anyone has tried it and what they thought the trigger pull weight was. |
|
With a brand new gun, the standard semi-auto trigger is going to have a lot of issues piled on top of the pull weight that make it feel much heavier than it really is. Home builders and even most manufacturers install the parts as they come out of the bin, but it’s important to note that parts makers ship their parts coated with something to keep them from rusting, NOT a reasonable gun lube. This protective coating is thick, heavy, and tends to collect all sorts of gunk while the part get moved from point to point. This is where a lot of the crappy feel that standard semi triggers in ARs are renowned for. When I install a fire control group, first I thoroughly clean and degrease all the parts. Then I generously lube the trigger, hammer and disconnector. Finally, I put a dab of light grease in the pin bore of both the hammer and trigger. Only then do I install the parts. This process cleans out a lot of stuff manufacturing can leave in and on the parts. It also provides a more appropriate lubrication on the hammer and trigger pins, so everything move much more smoothly. A clean, smooth 7 pound trigger is not a bad thing. A gritty, inconsistent 5 pound trigger IS a bad thing. You can see a big difference in the grit, smoothness and consistency by just cleaning those parts and properly lubricating them. |
|
Quoted:
I have the Anderson AM-15 M4,multi cal open complete lower . Sorry to hear that 
All kidding aside, if that one has that goofy stainless LPK, it may not wear-in like a typical milspec trigger. If it has a milspec trigger, just grease it like normal, and dry fire the shit out of it while parked on the couch. Milspec triggers get better after a bunch of use, but still way to big of a window to nail down what the pull may actually be. You would have to measure it yourself. |
|
Quoted: Sorry to hear that
All kidding aside, if that one has that goofy stainless LPK, it may not wear-in like a typical milspec trigger. If it has a milspec trigger, just grease it like normal, and dry fire the shit out of it while parked on the couch. Milspec triggers get better after a bunch of use, but still way to big of a window to nail down what the pull may actually be. You would have to measure it yourself. Maybe I got lucky. |
|
Quoted:
I have an Anderson stainless LPK in one of my ARs. The trigger and hammer are the only stainless parts, if I remember correctly? Anyway, the entire parts kit was machined and finished with near perfection and the trigger/hammer sears were polished nicely from the factory. The triggers is smooth, breaks nicely and has almost no travel. I'm impressed with it. Maybe I got lucky. Quoted:
Quoted: Sorry to hear that
All kidding aside, if that one has that goofy stainless LPK, it may not wear-in like a typical milspec trigger. If it has a milspec trigger, just grease it like normal, and dry fire the shit out of it while parked on the couch. Milspec triggers get better after a bunch of use, but still way to big of a window to nail down what the pull may actually be. You would have to measure it yourself. Maybe I got lucky. 
Does yours have that odd looking hammer? |
|
Quoted: Right on, that is the first positive report I have seen. A few years back, there were some reports about light primer strikes, they must have fixed all that
Does yours have that odd looking hammer? |
|
Quoted:
Yeah a basic milspec trigger runs a pretty wide margin. And the grittiness is just... whatever you get. If you want a good trigger, MBT is fantastic for the price. And do clean all the surfaces, and relube. |
| The least inexpensive trigger I have found that is decent is the PSA EPT it feel much nicer than your run of the mill milspec. It's still a little heavy but relatively smooth. I haven't tried it but a set of JP springs on it probably would clean it up pretty nice. |
|
I would not lay any blame at the feet of Anderson as far as mil spec type trigger weight and feel. Such triggers, pretty much across the board vary widely in weight between about 5.5 lbs and over 8 lbs, and most have significant grit. Just know that is what you are going to get from any general purpose AR LPK. A little work with fine grit valve grinding compound in place of grease and repeatedly dry firing, followed by thorough cleaning and proper grease will work wonders to smooth up such triggers.
The best off-the-shelf mil spec type trigger I have encountered was in an S&W M&P 15 (not the Sport). Right at 8 lbs, but smooth as silk. Came from the factory like it had 1,000 rounds on the trigger. Heavy but silky smooth with a clean break. I still use that trigger group in another build as the basis for my current HD carbine. There is a lot to be said for a good, smooth, crisp single stage 8 lb. trigger in an HD role for when adrenaline is pumping when things go bump in the night. |
|
Quoted: What is the trigger pull weight before and after? Rise Armament RA-140 single stage (3.5lbs) Mine is closer to 3 in 16" AR Timney single stage Competition (3.0lbs) Mine is about 2.6-2.8 in a 20" AR Hiperfire / Hipertouch 24C single stage (2-2.5lbs) measured at 1.5lbs. CMC Lantac E-CT1 trigger (flat version) (3.5lbs) measured 3lbs / 2.8oz. Geissele Super Semi-Automatic Enhanced (SSA-E) Trigger: Specs: Type:2 Stage 1st Stage Weight Range:2.0 - 2.5 lbs. 2nd Stage Weight Range:0.9 - 1.3 lbs. Total Pull Weight Range:2.9 - 3.8 lbs. My findings with digital gauge and assembly lubed per instructions: Did not test 1st stage. Second Stage: Finger placement in approx center: 1.3 - 1.6 lbs. Most were closer to 1.3 lbs. Finger placement at bottom: 0.6 oz. - 0.8 oz. |
AR Sponsor