Anyone add the Apex 4 1/4" barrel to their M & P so how much of an improvement in accuracy? The twist rate is 1/10 which is more ideal with 115 & 124 weight bullets over Wilson Combat 1/16 twist. S & W did use the faster twist years ago but drop it for the 1/10 standard twist.
I have a threaded Apex barrel in my 2.0 Compact with no complaints. Apex has designed a bit more dwell time into their barrels and claim this adds to accuracy. I'm not an expert on that but since I was suppressing the gun I liked the idea of a bit more dwell time with a can on it. Here's a target from 20ft shot with the black 2.0 by my son-in-law...he's a good shooter! Apex barrel and trigger/sear. The FDE has an Apex trigger but no plan to suppress it.
M & P 4 1/4" Apex Barrel
Linear Mode
