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Posted: 4/13/2014 4:14:54 PM EDT
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I just finished building my first AR-15. Its a true dissy with a rifle length gas system. The plan became to feed it a steady diet of xm193 or xm855 to keep it cycling happy, even though the manufacturer said that they test fired the upper on Brown Bear .223 and confirmed that it had no problems cycling it. When I put together my lower I slapped some JP light weight trigger springs of the 3.5 to 4.5lb variety into it. It later dawned on me, after I bought my upper, that I might have issues with light primer strikes. I certainly do not want any hang fires either. My trigger thus far consists of a milspec trigger, JP springs, and a grip adjuster screw deal. All together, it feels fairly nice while dry firing it except for a tiny bit of grit. I saw that JP makes a red hammer spring. Although they say it will not produce noticeable results with a milspec trigger. I've also read that people still get light primer strikes with the red springs as well though. Then I read about people running lightened hammers with lightened springs. I could have sworn that I read JP's hammers are not intended for use with milspec triggers. I've also seen people cut their hammers to lighten them. I'm not so sure this is a good option. I've looked at other triggers and my budget right now is extremely small after throwing tons of money at this thing. I'm looking for an inexpensive, yet safe, fix that leaves me with a light single stage trigger that can reliably light off hard surplus primers. I'm really kicking myself for trading my Hypertouch 24C right now.... Does any one have any experience with running a JP speed hammer or a cut down hammer, JP springs, and a milspec trigger with surplus ammo? I do plan on using some polishing compound and a flitz wheel to polish the mating surfaces of my trigger to try to get rid of the grit. I know about the case hardening and not wanting to remove any material. Any advice is greatly appreciated. I know every gun is different and I haven't been able to get out and shoot mine yet, so I may just be paranoid. I've tried to educated myself as best I can, but an education only takes you so far without the experience to back it up.
Edit: Heres a pic of it just cause every thread should have AR porn... lol https://farm8.staticflickr.com/7381/13835517754_dc4dc9f234.jpg |
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You say You have not shot it yet.
I would shoot it before doing any mods, including all the spring swapping You already did. I would not try to polish it. If You are not happy with the trigger, spend the money on a Geissele SSA or the cheaper ALG if that is too much money. Stock triggers most times feel gritty and will smooth out with a few hundred rounds of use. |
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Dude....space that stuff out. Hard as hell to read.
I have been running the same combo you are for over 2 yrs. Had light strikes shooting Hornady Steel Match once. I immediately decided not to pay for a bobbed hammer and cut mine myself. It's been that way for over 2 yrs, and I've yet to encounter any ammo since I can't fire reliably. Trigger also has plenty of rounds on it, so mine is smooth. I want an upgraded trigger myself, but just don't think it would be enough better to justify the expense. At least that's what I keep telling myself. |
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Crowdlg, I think you're right, maybe I should just shoot it and see what happens, but I don't want intermittent issues. I do have to break in the barrel still. Maybe I'll just shoot it and see what happens before I start modifying things. I want a single stage trigger, not a two stage, SSA is out, although I know its a nice trigger. I also cant throw that much money at a trigger right now. The Hypertouch I had was really nice, but this gun will go with me into the woods when I got gold mining this year. I think having a mil spec trigger thats around 4.0-5.0lbs that I'm not afraid to hand to some one and have them shoot is the best option for this rifle. I have another lower that I'll slap a light single stage in and go crazy with later. When I go out plinking with friends, this rifle will more than likely be shot by other people of varying experience levels, so this trigger has to be user friendly.
So you recommend letting the trigger break itself in rather than lightly polishing it? Do you think that lightly polishing it will really take off the case hardened material and compromise the trigger? I have considered the ALG ACT trigger to just be done with it and have a nice mil spec single stage. |
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FourSixty, sorry for my post being hard to read.
Do you have a pic of your bobbed hammer? How did you bob your hammer? I've considered an ALG ACT trigger because of the price and that it would smooth out the pull. My only concern about bobbing that hammer is the NiB coating. I fear it may flake off after its bobbed. |
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One of my favorite triggers is a Armalite mil-spec POS on a beater rifle. I polished the contact areas with my high-speed buffing wheels and some micro fine honing compound. Did the "little trigger spring bend trick" and shot the hell out of it. Works 100% and is a pretty nice single stage trigger. I'm not sure how a person could screw this up, it's simple.
The JP yellow springs wont do anything significant unless you polish the trigger. |
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Quoted:
The army marksmen unit has reported vertical stringing of shots due to low power hammer springs causing inconsistent primer ignition. Very interesting. So what I'm getting out of this is use the yellow trigger spring and standard hammer spring? I wonder what this would net me for pull weight in conjunction with an ALG ACT. |
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Quoted:
FourSixty, sorry for my post being hard to read. Do you have a pic of your bobbed hammer? How did you bob your hammer? I've considered an ALG ACT trigger because of the price and that it would smooth out the pull. My only concern about bobbing that hammer is the NiB coating. I fear it may flake off after its bobbed. I don't have a pic handy but can get one. It's nothing special. I used a cutoff wheel then sanded and polished it to smooth it up. I can't answer the NiB question though, as mine is a standard mil type trigger. I can assure you the yellow springs make a huge difference. My trigger probably has 5,000rds or so on it. Most of those were after I changed it up because the stock feel sucked in my opinion. |
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Quoted:
I don't have a pic handy but can get one. It's nothing special. I used a cutoff wheel then sanded and polished it to smooth it up. I can't answer the NiB question though, as mine is a standard mil type trigger. I can assure you the yellow springs make a huge difference. My trigger probably has 5,000rds or so on it. Most of those were after I changed it up because the stock feel sucked in my opinion. Quoted:
Quoted:
FourSixty, sorry for my post being hard to read. Do you have a pic of your bobbed hammer? How did you bob your hammer? I've considered an ALG ACT trigger because of the price and that it would smooth out the pull. My only concern about bobbing that hammer is the NiB coating. I fear it may flake off after its bobbed. I don't have a pic handy but can get one. It's nothing special. I used a cutoff wheel then sanded and polished it to smooth it up. I can't answer the NiB question though, as mine is a standard mil type trigger. I can assure you the yellow springs make a huge difference. My trigger probably has 5,000rds or so on it. Most of those were after I changed it up because the stock feel sucked in my opinion. I'd love to see a pic if you don't mind snapping one. I think that I might get an ALG ACT and slap it in there with the yellow springs and go break my barrel in. If it has issues, then I'll try the standard hammer spring. If I don't like that, then I'll bob the hammer. Well, hopefully bobbing something thats been NiB coated doesn't cause that coating to flake. |
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