we're adding the overall trigger pull weight, so you'll feel the change in weight for the first stage. the second stage, in which to break the sear, will remain constant.
each setting is advertised to reflect around 8oz in felt pull weight. however, in most cases the change per setting is closer to 4 or 5 ounces in actual pull weight. as we coil the spring tighter, we add weight. so to add weight set the spring closer to the floor, to lighten weight take spring up closer to the disconnector.
does this help?
Yes it does. So you have about a 10oz span; the baseline, baseline +5oz, and baseline +10oz, correct? And it only affects the first stage portion.
By any chance, did you test a Tactical 2-stage trigger? Armalite sells two versions, they look the same, the only thing I can think is the NM are finished better on bearing surfaces and maybe have tuned springs. The NM goes for about $150 street price, the Tactical version goes for about $100. The Tactical is their stock trigger they put in all of their carbines if I'm not mistaken.
I'm running two triggers right now (actually, one, with another awaiting to be tested/broken in), a RRA NM two-stage and a Bill Springfield-tuned CMT trigger. Bill's is a single stage, but the difference between the gritty stock trigger and his tuned version is pretty remarkable. I asked for him to give me the 4lb trigger, I don't have a pull gauge, but it feels pretty kick ass during dry firing. He does all this while retaining stock springs. As I get more time on it, I'll report out.
Thanks again for performing this comparison.
i think i've heard of this fellow. is he the guy doing this in a turn around for $35? somebody on ar15.com may have mentioned him, or it may have been another chap...
either way, i will caution anyone against a scenario where we take mil spec hammers and sears and we begin grinding and polishing. the surface hardening on most of them is a few thousands, and you can easily move past this threshold in a hurry while doing your polish job. i recognize that this will work fine for some folks as their rigs don't see enough use to wear past surface hardening and become problematic. or they simply don't put enough rounds down range to wear too much even though the surface hardened portion of the engagement points may be already gone. either way, you're set up for a pending disappointment. plinking out the back door isn't a tough spot to be in when the firearm doubles and/or quits. kickin' down doors for a living would make me reconsider my choice of triggers quick, fast, and in a hurry.
food for thought.
i don't want to have anyone think i'm condemning this fellow considering i don't know his process. i'm speaking generally.
There seems to be some debate as to whether or not current FCGs are surface-hardened or through-hardened.
Bill's work came well recommended from many folks at TOS, some who have used his triggers in 3-day classes w/o issue. Bill provided some of his thoughts on his work, status of quality of triggers, hammers and disconnectors, need to properly lube/maintain trigger, maintenance intervals for parts replacement, etc.
This is for a fun gun, I'm not terribly worried about problems based on the number of favorable reports I've read, but I'll be vigilant.
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just got it wednesday. i installed it tonight and lent the AR10 to a friend as he wanted to run a few hundred through it. that'll loosen it up and i can test it then...
the AR10 trigger does have slightly heavier springs, but keep in mind it also has a much higher mass hammer. the combination makes the difference on the hard primers and such. the lock time is a bit slower, but frankly in this scenario you don't get something for nothing. lower lock time is certainly better, but being relative you have to keep it all in perspective. i'd much rather have a reliable ignition source as opposed to a few miliseconds difference in lock time for all practical purposes.
more to come...
Septic have John or Jason mail you a AR10 srping for the AR15 Timney you were having trouble with on the hard primers. I just installed one im mine and will be testing it out tomotrrow. What type of 5.56 were you having problems with? Im taking some Privy out and im trying to see what else I can dig up without upsetting my ammo balances.
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