Rare Breed FRT-RD3 (SEF) Forced Reset Trigger for HK MP5/SP5

The official Rare Breed Triggers FRT-RD3 (SEF) — a drop-in, duty-grade two-stage 3-position Forced Reset Trigger (Safe/Semi/FRT) designed from the ground up for HK roller-delayed firearms, 100% manufactured and assembled in the USA.

• Fits HK MP5, MP5K, SP5, and SP5K roller-delayed pattern firearms
• 3-position: Safe, Semi, and Forced Reset — HK SEF style safety selector
• Designed for HK SEF grip frames (traditional S/E/F letter markings, single-sided left lever)
• Clean, crisp two-stage trigger pull; geometry tuned for correct, safe timing on the roller-delayed platform
• 7075 anodized aluminum housing with heat-treated 4140 steel components
• Works with the factory semi-automatic bolt carrier (full-auto BCG compatible but not required); no receiver modifications needed
• Condition: New