E SERIES, is that what was called a bill board, mine is a 2009 with adj-iron sites, but mine was a special order from the factory, mines got officers sites and match grade barrel, bushing and trigger, i was raised with guns but all this knowledge about guns i aint a clue, just know safety first, empty guns kill, then reliability followed by accuracy,in that exact order,, so if they are the same they make iron adjustable sites called officer sites which dove tail in like the standard non adjustable rear site, but as i said i aint even sure that a E series and a BILLBOARD are the same, D's had internal ejectors and E's had external ejectors, 08 was D, 09 on E , but i am probably wrong, i'm just a old country boy whom see's guns as fine machinery that borders on fine art, ok i looked mines a JRE so i recon a E series is different,,,
