Sizing Guide (Belly size inches)
XS - 23.8-28.5
S - 28.5-33.3
M - 33.3-38.0
L - 38.0-42.8
XL - 42.8-47.5
XXL - 47.5-52.3
XXXL - 52.3-57.0
There is not a Tactica Belly Band Holster for the Sig P239.
The Tactica Belly Band Holster will not fit the M&P M2.0 45. The Tactica Belly Band Holster will fit the M&P Shield45.
The Tactica Belly Band Holster for the M&P .45 Shield is designed for models with a 3.3" barrel. It is not open ended and would not be able to accommodate your 4.6" barrel.
The correct size Tactica Belly Band Holster for you would be a size medium. Medium fits between 33" and 38".
The sizes will fit the following belly size: XS=23.8"-28.5 S= 28.5"-33.3" M=33.3"-38.0" L=38.0"-42.8" XL=42.8"-47.5" XXl=47.5"-52.3" XXXL= 52.3"-57.0"
The sizes will fit the following belly size: XS=23.8"-28.5 S= 28.5"-33.3" M=33.3"-38.0" L=38.0"-42.8" XL=42.8"-47.5" XXl=47.5"-52.3" XXXL= 52.3"-57.0"
There is a sizing guide for reference available on the manufacturer's website: https://tacticafashion.com/product/belly-band-holster/