Rare Breed FRT-RD3 SEF – MP5/SP5 FRT

The Rare Breed Triggers FRT-RD3 SEF is a three-position forced reset trigger designed specifically for SEF-style MP5 grip frames using the traditional single-sided selector configuration. This is the SEF version and will not fit AMBI/pictogram-style grip frames.

Description

The Rare Breed Triggers FRT-RD3 SEF brings Rare Breed’s forced-reset system to MP5-pattern roller-delayed firearms equipped with the traditional SEF-style grip frame.

The SEF version is intended for housings using the classic MP5-style selector configuration typically identified by S-E-F markings and a single-sided selector lever.

IMPORTANT — SEF vs. AMBI

Rare Breed manufactures the FRT-RD3 in two distinct configurations: SEF and AMBI. They are not interchangeable.

Choose this SEF version if your firearm has the traditional SEF-style grip frame and selector arrangement.

If your firearm uses an ambidextrous Navy/pictogram-style housing, you need the FRT-RD3 AMBI, not this product.

Manufacturer-Listed Platform

Designed for the:

• HK MP5
• HK MP5K
• HK SP5
• HK SP5K

For MP5-pattern clones, identify the grip-frame type rather than ordering solely according to the firearm’s manufacturer or model.

MKE/AP5, PTR, Zenith and other MP5-pattern firearms can exist in different housing configurations. Verify that your firearm actually uses an SEF-style housing before purchasing.

What’s Included

According to Rare Breed, the SEF package includes:

• FRT-RD3 trigger
• SEF single-sided safety selector
• 1/16” Allen key
• 3/32” Allen key

Not Sure Which Version You Need?

The easiest starting point is your grip housing:

S-E-F markings + traditional single-sided selector ? SEF
Pictogram/Navy markings + ambidextrous selector ? AMBI

Still unsure? Send Ohio Gun Authority a clear photo of both sides of your grip frame before ordering and we’ll help identify the correct version.

Manufacturer: Rare Breed Triggers
Model: FRT-RD3 SEF
SKU: FRT-RD3-SEF
Platform: MP5 / MP5K / SP5 / SP5K
Configuration: SEF-style grip frames
Operation: Three-position forced reset trigger