Gary Stevens Posted September 22, 2014 Share Posted September 22, 2014 I searched but no luck. Anyone make a good 9mm AR trigger? Link to comment Share on other sites More sharing options...
Buddy2 Posted September 22, 2014 Share Posted September 22, 2014 Have the bolt ramped and you can run any trigger you want. Link to comment Share on other sites More sharing options...
Gary Stevens Posted September 23, 2014 Author Share Posted September 23, 2014 Should I read that as matching the normal bolt ramp cut? Link to comment Share on other sites More sharing options...
MickB Posted September 23, 2014 Share Posted September 23, 2014 What 9mm AR do you have? As long as you have a ramped 9mm bolt and your current gun has a rounded hammer (not a notched 9mm hammer) you can run a JP trigger or as I do, a POF drop in trigger. Or most any AR15 match trigger. Mick Link to comment Share on other sites More sharing options...
Gary Stevens Posted September 23, 2014 Author Share Posted September 23, 2014 I have a factory Colt, but I am in the process of building another one. At this point all I have is the lower. Link to comment Share on other sites More sharing options...
MickB Posted September 23, 2014 Share Posted September 23, 2014 What type of hammer is on the factory Colt? Notched 9mm (older gun), or M16 rounded hammer? If you have the M16 hammer, you have the ramped bolt, which means use any AR trigger you want... Mick Link to comment Share on other sites More sharing options...
dauntedfuture Posted September 24, 2014 Share Posted September 24, 2014 I used a standard AR trigger in the one I HAD. It broke both trigger pins..... Link to comment Share on other sites More sharing options...
MickB Posted September 24, 2014 Share Posted September 24, 2014 (edited) Newer Colt 9mm rifles use stainless steel pins to prevent this... Mick I used a standard AR trigger in the one I HAD. It broke both trigger pins..... Edited September 24, 2014 by MickB Link to comment Share on other sites More sharing options...
gose Posted December 20, 2014 Share Posted December 20, 2014 What 9mm AR do you have? As long as you have a ramped 9mm bolt and your current gun has a rounded hammer (not a notched 9mm hammer) you can run a JP trigger or as I do, a POF drop in trigger. Or most any AR15 match trigger. Mick I need to play around more with my YHM upper, but jp trigger + jp hammer + SCS didnt seem to be a great combination for the lower. Need to try it with a regular buffer and spring to rule out the SCS, but in its current setup, it will start to hammer follow with anything over 135 pf. Link to comment Share on other sites More sharing options...
v1911 Posted December 20, 2014 Share Posted December 20, 2014 Is that the 9mm SCS or the standard one? Link to comment Share on other sites More sharing options...
BigBamBoo Posted December 20, 2014 Share Posted December 20, 2014 As stated above, if you have a ramped bolt pretty much any aftermarket trigger will work. That being said....some of the aftermarket triggers use shorter style hammers. This can/will cause reset problems. So if you can, take a standard factory hammer and compar it to the hammer of the aftermarket trigger you want to use. If it is the same height, you should be GTG. I am currently using a ELF 3gun trigger in my 9mm AR. Works great. I ran a Timney 3 lb. trigger in one of my older 9mm AR's with no problem. Link to comment Share on other sites More sharing options...
gose Posted December 21, 2014 Share Posted December 21, 2014 Is that the 9mm SCS or the standard one? The 9mm one. I single loaded 20 rounds of each of the 128 pf ammo as well as the 140 pf ammo (measured in my handguns). Not a single one of the 128 pf rounds had a hammer follow and all of the 140 pf ones did. Im guessing its just borderline working with the lower pf ammo and the extra recoil force with the hotter ammo is enough to push it over the line. 12 pf isnt really enough of a safety margin... Guess I'll have to try something other than a JP trigger to get this thing running safely. Link to comment Share on other sites More sharing options...
alma Posted December 21, 2014 Share Posted December 21, 2014 I really want to pick up a SIG MPX. Apparently they are compatible with standard AR triggers and the controls otherwise mirror AR. http://www.sigevolution.com/sigmpx Link to comment Share on other sites More sharing options...
gose Posted December 22, 2014 Share Posted December 22, 2014 I really want to pick up a SIG MPX. Apparently they are compatible with standard AR triggers and the controls otherwise mirror AR. http://www.sigevolution.com/sigmpx But it's a SIG And it's about 2x the price of this: http://cz-usa.com/product/cz-scorpion-evo-3-s1-pistol/ Link to comment Share on other sites More sharing options...
alma Posted December 22, 2014 Share Posted December 22, 2014 I really want to pick up a SIG MPX. Apparently they are compatible with standard AR triggers and the controls otherwise mirror AR. http://www.sigevolution.com/sigmpx But it's a SIG And it's about 2x the price of this: http://cz-usa.com/product/cz-scorpion-evo-3-s1-pistol/ Yes, but you can't swap out parts on the CZ with AR15 components. Link to comment Share on other sites More sharing options...
littlehendrick Posted December 25, 2014 Share Posted December 25, 2014 But with the Sig...you pay $1,500+, rumored $70 magazines...is it really worth it? Yes, CZ will take a bit to build an aftermarket, but at that price point ($850) with mags under $30, it will develop. And for some, it will be the factor that it is "different."I am currently saving up for an SBR upper in 9mm. Anyone know if you can run a Geissele trigger with a ramped bolt? Link to comment Share on other sites More sharing options...
BigBamBoo Posted December 25, 2014 Share Posted December 25, 2014 I have heard that the Geissele 3gun triggers hammer is to short to get reliable reset with the ramped bolt. Other Geissele triggers are said to work with the ramped bolt. Link to comment Share on other sites More sharing options...
gose Posted December 26, 2014 Share Posted December 26, 2014 I have heard that the Geissele 3gun triggers hammer is to short to get reliable reset with the ramped bolt. Other Geissele triggers are said to work with the ramped bolt. But their 3-gun triggers are the only single-stage ones, right? I bought a Timney to try out. Hopefully that will work better than the JP one. Link to comment Share on other sites More sharing options...
gose Posted December 26, 2014 Share Posted December 26, 2014 But with the Sig...you pay $1,500+, rumored $70 magazines...is it really worth it? Yes, CZ will take a bit to build an aftermarket, but at that price point ($850) with mags under $30, it will develop. And for some, it will be the factor that it is "different." I am currently saving up for an SBR upper in 9mm. Anyone know if you can run a Geissele trigger with a ramped bolt? The CZs are already being used in competitions around Europe, and I think quite successfully, so hopefully after market stuff will grow. Link to comment Share on other sites More sharing options...
BigBamBoo Posted December 26, 2014 Share Posted December 26, 2014 (edited) I have heard that the Geissele 3gun triggers hammer is to short to get reliable reset with the ramped bolt. Other Geissele triggers are said to work with the ramped bolt. But their 3-gun triggers are the only single-stage ones, right? I bought a Timney to try out. Hopefully that will work better than the JP one. I ran a Timney 3 lb trigger in one of my past 9mm AR's with zero problem. Plus you can run the Timney in a non-ramped bolt due to it's rounded hammer. Edited December 26, 2014 by BigBamBoo Link to comment Share on other sites More sharing options...
littlehendrick Posted December 27, 2014 Share Posted December 27, 2014 But with the Sig...you pay $1,500+, rumored $70 magazines...is it really worth it? Yes, CZ will take a bit to build an aftermarket, but at that price point ($850) with mags under $30, it will develop. And for some, it will be the factor that it is "different." I am currently saving up for an SBR upper in 9mm. Anyone know if you can run a Geissele trigger with a ramped bolt? The CZs are already being used in competitions around Europe, and I think quite successfully, so hopefully after market stuff will grow. It seems that either the US aftermarket follows the trend of European markets, or completely does its own thing. I hope we follow them, and embrace the CZ warmly. I actually like the look of the factory stock (obviously have not played with one yet). I also wonder based off the importation and aftermarket, how 922r compliance will be achieved. Link to comment Share on other sites More sharing options...
Dchi Posted December 27, 2014 Share Posted December 27, 2014 I tried 2 geiselee ssa 2 stage. Both had reset problems about 1-2 times every 50 rounds. Tried a geiselee select fire trigger, no problems. I'm using a timney single stage 3.5 lbs, seems to work fine but a little light for all the bolt bounce the blow back 9mm makes. I'd gladly pay $1500 for the sig mpx if it actual works. It is a locked breach action. Felt recoil would be half that of a Blow back 9mm. 9mm blow backs created a lot of felt recoil compared to .223 with a good muzzle brake. I'd say felt recoil is close to a 6.8 or 7.62x39. Not terrible but you won't be able to keep pace with A class or better shooter in 3 gun. I use my 9mm ar 15 for cheap practice and steel plates that are meant for pistol only. Link to comment Share on other sites More sharing options...
Finbox Posted December 28, 2014 Share Posted December 28, 2014 (edited) CZ is blow back, and has massive recoil compared to a race AR .223 low mass setup....the sig looks promising Edited December 28, 2014 by Finbox Link to comment Share on other sites More sharing options...
v1911 Posted December 28, 2014 Share Posted December 28, 2014 Is there anything preventing the development of a LMOS for 9mm? Link to comment Share on other sites More sharing options...
blairmckenzie1 Posted December 28, 2014 Share Posted December 28, 2014 Is there anything preventing the development of a LMOS for 9mm? the mass of the bolt/buffer is the only thing keeping it in battery. if you go light the chamber will still be under pressure on extraction, no bueno. Link to comment Share on other sites More sharing options...
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