This stock class Line SI conversion was built by Carter Machine in the early 1990s. Although Breech Drop, I call this nelson pump is a Maximaster.
Pete Clark of ''Peter's Paintball Pursuit Players Products'' with his Carterized bore drop nelson. Pete would buy used and new bore drop nelsons from Taso and take them to Earon Carter to covert into stock class guns with stainless bore drop snubs. Pete sold these guns to players in his pump group in Southern California and called them ''Maximasters.'' Pete estimates he had Earon perform this conversions to around 70 guns.