Question about "The Chart" and FCG pin diameters

AR/M4 AR Technical Discussion
1

First issue: On “The Chart” it calls for .154" pins for the FCG. Are the pins found in the STAG LPK .154"? I’m assuming they are, right?

Second issue: I swapped out the STAG disconnector that came in the STAG LPK with a Colt disconnector, as the STAG disco was in BAD shape; however, in looking over the invoice from SAW, I see that it’s a .155 semi-auto disconnector. Will this be an issu due to the trigger pin being .154? When I ordered from SAW, and talked to Tina, there weren’t any .154" discos, just .155".

Thanks.

2

To the best of my knowledge there are no .154 in. pins. They are either .155 in. or .170 in. pins. At least as far as Colt goes. I believe that the email I got from Bushamster said that they aslo use .155.

3

So, then, does “The Chart” have a typo? On it it states: “Milspec Dia. (.154”) FCG pins.

4

I don’t know what to say. My reference material from Colt states .155. Even if it was correct that is such a small difference I wouldn’t be concerned.

5

Aftermarket (read non-Colt) ARs use mil-spec sized pins .154"-.155"

ONLY Colt semi-auto guns even their LE models use the larger .170+" pins, again ONLY Colt uses large pins. (earlier Colts like SP1s and some others uses .155").

6

Thanks, fellas.