Shadow Systems’ DR920P (full-size, compensator) and MR920 (compact) are solid, well-finished pistols that bring match-grade barrels, generous slide serrations, optics cuts and ergonomic Gen-4 style frames to California buyers — with roster-required safety changes like a magazine disconnect and a loaded-chamber indicator (LCI).

Quick Highlights:

• DR920P: The non-threaded, pinned compensator is effective — noticeably flatter recoil and very shootable as a full-size pistol (≈4.5" barrel). Robust sights, multi-optic footprint, and comfortable stippling. Very few malfunctions in the reviewer’s ~1,000 rounds.
• MR920: Compact (≈4.18" barrel, 15+1) with the same high-quality fit and feel. Early stove-pipes/FTFs cleared up after ~150 rounds. One LCI on the MR920 stuck upright; the reviewer removed it and experienced no further problems — a reminder that LCI mechanisms can fail and shouldn’t be the sole safety check.

California legal context: AB1127 affects designs that use a certain cruciform trigger bar; Shadow is re-engineering affected models to meet a roster carve-out (manufacturers on the roster before Jan 1, 2026 can modify designs and re-certify). Transfers will be restricted starting July 1, 2026 unless changes are made, but Shadow reports they’re working on compliant updates and expect a prompt return.

Bottom line: Both pistols offer excellent ergonomics, optics readiness and competitive accuracy for their classes. The reviewer’s experience was largely positive but limited to a small sample — do further research and handle examples yourself before relying on any firearm for self-defense.