Some tips and tricks I found on my F/A Sporter build:
1) Standard Geissele handguard modification as discussed previously (I utilized a fibreglass grinding wheel and a dremel, cut like butter). CAREFUL.
2) F/A Installation I had to go through 2 forward assist assemblies (Mil-spec) to find one that fit, no idea why.
3) Strike Industries enhanced dust cover is only one that worked on my Upper that wouldn't have needed cutting of standard dust cover rod (Shortening)
4) Required a shorter bolt to install my Ergo grip. Bolt that came with it was too long and bottomed out.
5) TNA Reaction Rod used for majority of build. Lifesaver
6) Buy good quality roll pin punches and use lots of grease/oil
Last edited by Dohhunter; 03-18-2020 at 10:53 AM.
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Last edited by jiffx2781; 05-18-2020 at 12:38 PM.
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Yes, I just was not sure if the spring weight was holding the buffer back from its full stroke.
Member, CSSA, NFA, NRA
Not sure if there is a specific size for 18.6" barrels, but the recommendation for 20" barrels is 0.0935" or drill size #42.
I actually went #41 which is 0.096".
My barrel was undersized from the maker though, I can't recall the exact size of the gas port, but I want to say it was around 0.080"
How far should the FA protrude into the chamber?
I swapped the pawl and spring on a Strike Industries FA with some from a mil-spec Colt FA assembly, and the pawl looks like it now sticks out further into the chamber than with the stock SI FA. Should it be flush or completely inside the recess to avoid hanging on the bolt?