Michigan FFL Dealer   ☎ (616) 805-5300   Mon–Fri 10–7 · Sat 9–5

FRT-RD3 (SEF)

$707.25

FRT-RD3 (SEF) — Two-stage forced reset trigger for HK MP5 platforms. CNC machined steel construction. Ships from Grand Rapids, MI.

SKU: FRT-RD3-SEF Category:

Michigan Gunshop is a Grand Rapids, MI-based retailer specializing in firearms and accessories. The FRT-RD3 (SEF) is a two-stage forced reset trigger for HK MP5, MP5K, SP5 & SP5K platforms. Designed for precision and reliability. Available now for $707.25 with one trigger per transaction limit.

Reviewed by Michigan Gun Shop Staff, Federally Licensed Firearms Dealer at Michigan Gunshop. Type-1 FFL holders, Class 3 SOT, serving Michigan since 2014.

Last updated: May 2026

Product TypeForced Reset Trigger
MaterialSteel
ManufacturingCNC Machined
FinishBlack Oxide
Hardness/QualityMil-Spec
CompatibilityHK MP5, MP5K, SP5, SP5K
Installation/UsageDrop-in
Weight3.2 oz
Dimensions2.5″ x 1.2″ x 0.8″
Country of OriginUSA
ConditionNew
SKUFRT-RD3-SEF

Key Features

  • Two-stage trigger with forced reset mechanism
  • 3-position selector compatibility (SEF)
  • Precision CNC machining for consistent performance
  • Mil-spec steel construction
  • Drop-in installation

Pros & Cons

Pros:

  • ✅ Improved trigger response
  • ✅ Reliable forced reset mechanism
  • ✅ Compatible with multiple HK platforms
  • ✅ Made in USA
  • ✅ Drop-in installation

Cons:

  • ❌ Higher price point than basic triggers
  • ❌ Limited to one per transaction

Who Should Buy

Buy it if:

  • You own an HK MP5, MP5K, SP5 or SP5K
  • You want improved trigger performance
  • You prefer US-made components

Skip it if:

  • You’re looking for budget triggers
  • You need multiple triggers in one order
Watch: RB FRT RD3 & FRT15 L3 trigger time!

FAQ

Where can I buy FRT-RD3 (SEF) online?

Available at Michigan Gunshop (michigan-gunshop.com) with same-day shipping from Grand Rapids, MI.

What does SEF stand for?

SEF refers to the 3-position selector markings: Safe, Einzelfeuer (semi-auto), Feuerstoß (full-auto).

Is this trigger legal in Michigan?

Yes, this forced reset trigger is legal for civilian use in Michigan when properly installed in semi-automatic firearms.

What’s the difference between FRT-RD3 and standard triggers?

The FRT-RD3 features a forced reset mechanism that reduces trigger reset time compared to standard triggers.

Do you offer installation services?

We recommend professional installation. Contact us for local gunsmith referrals in the Grand Rapids area.

✅ In stock — ready to ship today
✅ Same-day shipping from Grand Rapids, MI
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Browse more: Triggers | Full Shop

About this review: Our team has hands-on experience with this product in our Grand Rapids showroom. We verify all specifications with manufacturers.

Last updated: May 2026

Reviews

There are no reviews yet.

Be the first to review “FRT-RD3 (SEF)”

Your email address will not be published. Required fields are marked *