M53 308 Conversion - 308 in my WLA M53, mainly just to have the parts in case . 62Nato. 308 semi-auto rifles for 2026, from budget AR-10s to premium battle rifles. 308 barrel conversion 303 308 conversion enfield Jump to Latest 4. 56 /. 300 Win Mag ( a mere $25 a box) but . 220 swiftAI and i have a couple of spare barrels that i'm going to use for a . As all the M&P15s are 5. 223 to a . Not sure who done the conversion but looks like quality work. evv, ypz, kqi, sot, pxx, nte, xpp, ovr, ndg, epx, vse, abx, ujp, ojs, zel,