Where the
NL's barrel is choked for match pellets, the Katran NL HP swaps in a 520mm non-choked bore built to push heavy slugs — same barrel length, different job. The 200cc cylinder still fills to 300 bar, while an 80cc plenum, regulated down to 150–200 bar, is calibrated for the extra draw of high-power slug shots. Chambered in .22, .25, and .30 only — no .177. At 3.75 kg it carries a 20 MOA rail for bigger long-range glass, an externally adjustable trigger, and the same 30-slot M-LOK Arca rail.