Para 15 Trigger

What the Para 15 drop-in FRT actually does

The Para 15 is an AR-15 drop-in FRT — a self-contained forced reset trigger cassette that uses the energy of the bolt carrier group to push the trigger forward mechanically after each shot, instead of waiting on your finger to release it. One pull still fires one round; only the reset is mechanical. That distinction is what separates a forced reset trigger from a machine gun under federal law, and it is why this class of trigger returned to the market in 2025.

Will it drop into your rifle?

It installs in the standard trigger pocket of a mil-spec AR-15 lower using the supplied anti-walk pins — no gunsmithing, no fitting, no permanent modification. It is not, however, a universal part. Non-mil-spec lowers and unusual selector cuts can prevent it from seating correctly, and because a forced reset design is driven by bolt carrier speed, the rest of the rifle matters more than it would with a conventional trigger.

For consistent reset, run an M16 (full-auto profile) bolt carrier group and expect to fit a heavier buffer — an H2 is the common starting point. Shooters running 10.5″ uppers or over-gassed builds usually adjust buffer weight before the trigger behaves predictably. If your rifle is a standard mil-spec carbine with a semi-profile carrier, budget for a carrier and buffer alongside the trigger rather than after it.

Para 15 specifications

Forced reset versus a binary trigger

Buyers cross-shopping the two usually want to know which is faster. They get there differently: a binary trigger fires on both the pull and the release, producing two rounds per cycle of the finger, while the Para 15 fires one round per pull and returns the trigger forward mechanically. In practice the result depends far more on the shooter and how well the rifle is tuned than on the mechanism itself. The wider range of forced reset triggers we stock covers the same ground if you want to compare before committing.

Legal status before you order

Forced reset triggers spent five years in litigation. In May 2025 the Department of Justice settled with Rare Breed Triggers, and the agency published notice that FRT-15 and Wide Open Trigger units would be returned to their owners — see the ATF’s own notice on the return of FRT-15s and WOTs.

Federal legality is not the end of it. Several states — California, New York, New Jersey, Washington and Illinois among them — restrict or ban rapid-fire trigger activators, and those lists change.

Verify the current rule in your state, and in any state you travel through, before ordering. We can’t advise on the law where you live, and we don’t ship where the product isn’t lawful.

Ordering, payment and delivery

The Para 15 ships as a complete assembly with anti-walk pins, ready to install after a function check. Cryptocurrency and third-party payment options are available at checkout. If you are still weighing whether this platform suits your build, the Para 15 Trigger overview walks through the range in more depth.