As much as I am a Geissele fan I think if you are going with a SSE , its not much different pull weight from a RRA NM
htt p:// geissele.com/pdfs/TriggerSummarySheet.pdf
Either go with a SSE if you want Geissele or a super awesome Hi Speed ( not sure of your budget )
Further to that , I generally put a JP Rifle rifles "Yellow Spring Kit" ...its only $11
http://w w.brownells.com/rifle-parts/triggers-bottom-metals/trigger-parts/trigger-springs/ar-15-reduced-power-spring-kit-prod7582.aspx
or if you are worried about light primer strikes ( I have not seen this with except on a 7.62x39 upper with Wolf ammo ( has deeply seated primers ) then go with the JP Red spring . It has a lighter "Yellow" trigger spring which has nothing to do with primer strike force but their Red heavier hammer spring ( but still lighter than regular )
http://w w.brownells.com/rifle-parts/triggers-bottom-metals/trigger-parts/trigger-springs/ar-15-enhanced-reliability-spring-kits-prod32318.aspx
I just put a Yellow spring in a RRA NM . Pull went from no creep crisp 4.5 lbs to a no creep chrisp 3 lbs . Takes a couple of minuites and less than $15
FYI : the reason RRA NM (National Match) does not come with lighter pull is it must meet the minimum pull weight of 4.5 lbs National Match competion shooting
Because you have not purchased your LPK already, the best value by far is go to Questars and buy
https://shopquestar.com/shopping65/shopexd.asp?id=443&bc=no
Its only a $80 premium to get the RRA NM which is a bargain . Order a JP spring kit if you want lighter pull
Conclusion, if I am doing a build that has a budget, then I generally use RRA NM with JP kit , or I go all out with a
Geissele high speed.
If anyone says that the Geisseles are all drop in as does not require fitting has not put in enough Hi Speeds . It can take while with all the fitting and adjustment. Fortunately instructions are very well written
The RRA NM has totally different trigger geometry than a stock . Which is why you can never tweak a standard trigger to anything like a RRA NM.
If you want single stage, then go with a Timney or CMC drop in.