Hf Edt Design Marksman Ar15 Tri Asse

The Hiperfire EDT Designated Marksman is a single-stage AR-15 trigger designed for shooters who want a refined, controllable pull without sacrificing reliability. Built on Hiperfire's Enhanced Duty Trigger platform, the Designated Marksman configuration pairs a medium pull weight with the brand's signature SwingFast hammer and self-cleaning geometry—all engineered to keep your rifle running clean and fast through competition stages, hunting applications, and precision shooting where trigger control matters.

What sets the Designated Marksman apart is its Duplex Trigger Bow design. This dual-position trigger shoe lets you choose your engagement: position your finger high for a heavier pull and added safety margin under stress, or drop low for the crisp, precise control you need behind glass at distance. Hiperfire includes two interchangeable hammer springs, so you can dial in either a 4.5 lb. or 5.5 lb. pull to match your preference and your rifle's role. The extra-weight SwingFast hammer ensures hard, positive primer strikes without creep, and short over-travel means less wasted motion between break and reset—a reset you'll feel and hear clearly.

The self-cleaning trigger geometry is built to shed debris naturally, keeping jamming and reset problems at bay in field conditions. The EDT Designated Marksman fits small-pin (.153") AR-15 lower receivers and AR-308 rifles that accept AR-15 triggers, making it a straightforward drop-in upgrade for most modern builds. If you shoot service rifle matches, hunt medium to long range, or run precision courses where trigger feel and control define performance, this is a trigger that earns its place on your rifle.

Key Features

• Duplex Trigger Bow with high and low finger positions for adaptive control and safety
• Medium pull weight: 4.5 or 5.5 lbs. (via two included interchangeable hammer springs)
• SwingFast Hammer Head for fast locktime and positive primer strikes
• Single-stage with minimal creep and clean, decisive break
• Short over-travel and fast, audible reset
• Self-cleaning design to prevent debris-related jams and reset issues
• Smooth, consistent pull profile optimized for precision shooting
• Fits small-pin (.153") AR-15 lower receivers and compatible AR-308 platforms

Specifications

Frequently Asked Questions

What AR-15 receivers does the EDT Designated Marksman fit?

The trigger is designed for small-pin (.153") AR-15 lower receivers and AR-308 rifles that use AR-15 trigger groups. Verify your lower's pin diameter before purchase; it's a straightforward drop-in for standard builds.

Can I switch between 4.5 lb. and 5.5 lb. pull weights?

Yes. The Designated Marksman comes with two interchangeable hammer springs—one configured for 4.5 lbs. and one for 5.5 lbs. Swapping springs takes just a few minutes and lets you tune the pull to match your shooting scenario.

How does the Duplex Trigger Bow work?

The Duplex Trigger Bow gives you two finger positions on the same trigger shoe. Engage high for a heavier pull and extra safety margin under stress; drop to the low position for lighter, more precise control ideal for target and long-range work. It's built into the Designated Marksman configuration.

Is this trigger reliable for defensive and duty use?

Yes. The EDT Designated Marksman uses mil-spec hammer energy and an extra-weight SwingFast hammer to ensure hard, positive primer strikes. The design is rated for law enforcement, service rifle competition, and personal defense applications while delivering a lighter, cleaner pull than standard mil-spec triggers.