The more expensive one is the 9mm. If in doubt add it to your cart and it will tell you which you have chosen.
In the MPN “manufacturer part number” shown in the description there is HBAR-01-SB for the AR 5.56/300 BLK version and HBAR9-01-SB for the 9mm version. This part number is also included directly under the pictures shown of the product advertised.
The one that's $255 is for the 9mm and the one for 5.56/300 BO is $239. After you make the selection it also tells you when you click on the image.(At the bottom of the page)
it's dumb but when you put 1 in your cart it will tell you if it's the 9mm or 5.56/300 black out
the price for the 9mm one is $255 while the price for the 556/300 blackout is $239. that is the only difference I could find
Look at the MPN: it says HBAR and the other one said HBAR9
The higher dollar is the 9mm.
Has the same question the HBAR-01-SB is for the 556/300 and the model number with the 9 in it is for 9mm. The model number pops up when you select one