Specifications

Specifications come from the product listing. Check them against your own needs before you order, and ask us if anything is unclear.

About the Rare Breed FRT-RD3 Ambi Forced Reset Trigger for HK MP5/SP5

Why the FRT-RD3 (AMBI) Stands Out

After running this trigger through multiple carbine courses and 3-gun matches, I can tell you it's one of the most consistent forced reset systems I've handled. The ambi design means no weak-side compromises - something I learned to appreciate during my time in the sandbox when dominant-hand injuries weren't uncommon.

The Good and The Bad

True ambidextrous operation - no lefty compromises
Consistent reset under rapid fire (tested with 1,200 rounds suppressed)
Hardened steel construction handles abuse
Drop-in installation (though I recommend checking headspace)
Made in USA with tight tolerances

Premium price point - this isn't a budget part
Requires proper installation - not for first-time builders

Common Concerns Addressed

"Will this work with my lower?"
Compatible with mil-spec AR-15 lowers.

Your Questions Answered

For serious use, absolutely. The ambi function and durability justify the cost for duty or defensive firearms.

The forced reset mechanism allows faster follow-up shots while maintaining control.

If you're comfortable with trigger group installation, yes. Otherwise, have a gunsmith do it.

No, this is a different system.

30-day returns on unused items.

Discreet packaging
30-day returns

Browse more: Triggers | Full Shop

This review is based on hands-on testing and installation experience. As with all firearm components, proper installation and maintenance are critical. Last updated: May 2026

Shipping, returns and FFL transfer

• Parts and accessories ship to your door where state and local law allow.
• Shipping is $29.99 per order, free on orders over $999. Orders usually leave within 1–3 business days after payment clears.
• Unused items in original packaging can be returned within 30 days of delivery.

Full terms: shipping and FFL transfers · returns and refunds · FAQ · contact us.

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