u/Adorable_Customer756

Spent a lot of time and money trying to get this to work for me!

Here’s my Mk 18-inspired build. It’s currently sitting on an SBR'd Springfield Saint Victor lower, though I also have a YHM SBR lower. Both feature ambidextrous safeties and mag releases, but neither has an ambi bolt catch/release.
As a lefty, I train fine with this setup, but I’m curious to get everyone’s thoughts: is it worth upgrading to a fully ambidextrous lower from KAC or LMT?
Given the cost of the lower itself and the extra ATF wait time to SBR a new receiver just to gain an ambi bolt catch, is the performance upgrade truly worth the investment? Would love to hear from fellow lefties who have made the switch!

Home defense setup. BKF upper and lower. Maxim PDW. I run a lahar 30k on it.

All 556

Top to bottom:

7.5in Springfield Saint Sbr w/ Dead Air Sandman S

16in Rock River Lar15 w/ Aero Lahar 30k

10.3 DDMK18 Sbr with Dear Air Lazarus 6