I'm also a lefty, built a 6.5 Creedmoor on a Maga Arms Maten, right hand eject, JP Lmos bcg, 16" X-Caliber barrel 1:8 twist, Rifle length gas port, adjustable gas block, 14" switch with m-lock hand guard, Magpul Stock with carbine weighted buffer and spring. Topped off with a Sig Sauer Easy6 BDX 5-30x56 with kilo1600 BDX range finder. added a silencerco can to finish it off.
Shoots like a dream with no blow back. Just picked up another set of Mega Arms Maten for my next build. looking at the .277 fury, but haven't really decided.
Traynut