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View Full Version : Drop-in triggers for DPMS pattern .308 AR


ILVSMOG
06-03-2010, 10:06 PM
I'd like to put a nicer trigger in my DPMS pattern .308 AR, but I'm not sure what fits and what doesn't. I know the LPKs are different. I have Bill Springfield modified DPMS parts in there now and the break is clean, but just way too heavy for my taste. I'd like to put a Timney trigger in it, but will the normal AR pieces drop in or do I need a 308-specific piece?

Thanks!!

Jpach
06-03-2010, 10:18 PM
Timney triggers due fine, but they may not have enough oomph for all .308 primers. I had an AR-15 Timney in my .308 AR and sometimes I would get the VERY occasional light primer strike but that could very well have been due to it not being 100% into battery, which seems to happen sometimes with the .308 ARs ive played with.

dachan
06-04-2010, 12:24 AM
FCG of DPMS pattern AR10 rifles are identical to AR15's. Most any aftermarket trigger will work.

xr650r
06-04-2010, 12:58 AM
Dpms pattern does not have a firing pin spring like the ar10. You're good to go w/ an AR15 trigger.

elsolo
06-04-2010, 3:28 AM
It is suggested that you use a heavier spring on AR-10's, other than that any AR-15 trigger assy will fit a DPMS lr-308

tay
06-04-2010, 8:29 AM
My DPMS 308 LPK trigger spring was causing a lot of light primmer strike on my surplus 308 ammo and the trigger pin was moving out.

I replaced trigger set with RRA two-stage trigger set and added KNS Hammer and Trigger Pin set. The new trigger mod is great, able to shoot all ammo and no more issue with floating pins.

Any trigger from an AR platform will work but consider using a 'beefier' hammer and trigger pin set due to the 308 power.

12:13
06-04-2010, 2:09 PM
Timney makes an "AR-10" specific drop in trigger:
http://timneytriggers.com/sunshop/index.php?l=product_detail&p=42

I have not used the above trigger in the 308 platform personally. I got a Geissele trigger in mine & have had no issues.
http://www.geissele.com/

telcolineman
06-04-2010, 2:19 PM
My Armalite AR has a geissele in it, It was used in an AR15 and it works fine in the 10 platform. It does have heavier springs as described and I haven't experienced any failures

ott1
06-04-2010, 2:26 PM
I second the Geiselle trigger.

PIRATE14
06-04-2010, 3:51 PM
Well depending on what DPMS "style RCVR" you are using the Timneys might fit or not....if its a FULTON they won't fit....

But usually if its more of a STD trigger set-up like Rock River, Geisle..JP...those work in about any rcvr...;)

ott1
06-04-2010, 6:20 PM
Or get the Wilson Combat TTU.

wooger
06-04-2010, 7:14 PM
I have a CMMG dpms pattern lower and fitment has been an issue with ar 15 triggers.

dachan
06-04-2010, 8:22 PM
I have a CMMG dpms pattern lower and fitment has been an issue with ar 15 triggers.

That's an issue with your lower, not the triggers. In this case, it's truely you get what you paid for, and hopefully you didn't pay much for a CMMG.

wooger
06-05-2010, 7:27 AM
Absolutely correct and I didn't mean to imply that it was a problem with the trigger(s), just a warning to those contemplating buying a CMMG lower.

halifax
06-05-2010, 7:32 AM
Anyone tried one of these?

SR Gold Trigger System (http://pact.com/index.php?option=com_virtuemart&page=shop.product_details&flypage=shop.flypage&product_id=58&vmcchk=1&Itemid=1)

wooger
06-05-2010, 8:01 AM
I have, and it actually fit my lower as well.

halifax
06-05-2010, 9:16 AM
I have, and it actually fit my lower as well.

Any more info? How does it feel? Light strikes? Thanks

wooger
06-05-2010, 2:59 PM
Crisp letoff, easy installation. No problems to date. If you don't like long first stages this is a good trigger for you. Personally I like Geiselle a little better but I have a friend I shoot with sometimes who prefers the gold trigger.

EBR Works
06-05-2010, 4:39 PM
For something a little cheaper than the Gieselle, try a Jewell trigger. I have one in a POF lower/DPMS upper .308 build and it's worked flawlessly for 1K rounds plus.

pyro3k2
06-05-2010, 5:00 PM
Im running a timney in my .308 dpms pattern and Could not be happier, great trigger, no modification required and it has more than enough "umph" for the primers.

Hk996
06-05-2010, 5:03 PM
I have a timney in my AR10 and have had zero problems with it.

emtnsocali
06-05-2010, 6:07 PM
ive got a timney in my pof .308 and completely love it

ILVSMOG
06-06-2010, 9:53 PM
Thanks for all the great info everyone! I have an Iron Ridge lower and it sounds like I'm gtg with just about any AR-15 trigger. I have a Jewell trigger in my Rem. 700 and I love it. Only reason I mentioned the Timney by name in my initial post is that it seems to be a favorite (along with the Gieselle) among the AR crowd.