I can share this— all 43X’s with black slides have the updates that were put in place to pass bureau testing. I have no idea what the updates are, but the silver slide models don’t have them.
The changes made to the bureau 43’s will filter over to the commercial models, if they haven’t already. I have no idea what the updates are.
The mandated use of 135gr +P ammo in the bureau 43’s is due to terminal performance, not because of problems with the guns functioning with 147gr ammo.
Just got the call for the 43X MOS from my dealer. I paid, did the paperwork, and should get to pick it up next week. It’s not a Blue Label but I didn’t want to wait. It felt really good in my hand. Looking forward to mounting the 507K and trying it out.
This has been my favorite of all the slim lines I’ve tried. 10-8 sights with a tlr7 sub. It just shoots.
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I just got my first malfunction with my G48 MOS (407k and Tlr7)
A failure to eject with Remington 115gr white box FMJ
That’s after about 1550 rounds without cleaning the gun.
1000 were my cheap plated reloads with mixed range brass
500 Federal aluminum case 115gr FMJ
And one 50 rd box of Remington
It choked once in the second box.
Now I’ll clean the gun and see when the next malfunction arises….