SIGforum
MPX barrel/gas block gas hole diameter?

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https://sigforum.com/eve/forums/a/tpc/f/630601935/m/7730083094

March 15, 2022, 02:19 PM
Smokey99
MPX barrel/gas block gas hole diameter?
Thanks!


"Son, always take your paper to the woods" - my dad
NRA Endowment Life Member
3 Gun, PCC, IDPA, Bullseye Shooter
March 15, 2022, 06:48 PM
hrcjon
MPX questions take a lot more info given the various versions and SIG changes.
but .0469 is a good estimate of the baseline for a G2 8" barrel early production.
Not sure why it matters, but OK.


“So in war, the way is to avoid what is strong, and strike at what is weak.”
March 16, 2022, 05:18 AM
Smokey99
Thanks! I'm running a standard 16" barrel - don't know if that makes a difference.


"Son, always take your paper to the woods" - my dad
NRA Endowment Life Member
3 Gun, PCC, IDPA, Bullseye Shooter
March 16, 2022, 12:04 PM
Dwill104
quote:
Originally posted by Smokey99:
Thanks! I'm running a standard 16" barrel - don't know if that makes a difference.


The real 16” barrel that comes on the current PCC, or the 14”-ish barrel with the pinned long flash hider that came on the first MPX Carbine? From what I’ve heard, the gas port on the Gen 1 MPX ranged in diameter from .0550″ and .0625″. The Gen 2 gas port is .0469” (the original MPX Carbine is a Gen 2 in the overall MPX generations scheme). The gas port on the MPX PCC is supposedly .0495″ (some people call the PCC a Gen 3 because of the various changes, but technically I think it’s still a Gen 2 as far as Sig is concerned).