A Husker fan like "Gopher"God or husker70 could give a better recount of it than I, but just looking at experience and their recruitment profiles:
LT Jeremiah Sirles, 5th year SR, Lakewood, CO 3-star, offers from several Pac-12 schools (including Oregon), Northwestern, Tx Tech, Louisville
LG Jake Cotton, 4th year JR, Lincoln, NE 2-star, only offer from Nebraska
C Cole Pensick, 5th year SR, Lincoln, NE 3-star, only offer from Nebraska (though he committed a year+ before signing day)
RG Spencer Long, 5th year SR, Elkhorn, NE walk-on
RT Andrew Rodriguez, 4th year SR, Aurora, NE 4-star, #183 overall Rivals, only offer from Nebraska (committed 15 months before signing day)
On first blush, they are not very highly recruited by Nebraska standards, and all 3 interior linemen were recruited as DL. All are very experienced, though, with all being in their 4th or 5th year in the program. All redshirted except Rodriguez, who is easily the highest-rated recruit among them. Four of the five are Nebraska natives. Long seems to be the best NFL prospect at this point, possibly a 2nd-3rd round pick. Sirles and Pensick could get picked up as UDFA. Rodriguez is probably the most talented and could be an NFL player but has a reputation for disinterest, laziness, and lethargy.
EDIT: I see that Long was injured against Purdue a week ago (knee) and is done for the year. Mike Moudy (4th year JR, Castle Rock, CO 3-star, offers from Kansas, K St, Stanford, Northwestern, etc.) takes over in his spot. Seems like we could do some damage to the right side of their line.