Two of the most popular fast-fire trigger upgrades — but they work very differently. Here is the complete FRT-15 vs binary trigger breakdown to help you choose.
How Each Works
FRT-15 (Forced Reset Trigger)
The FRT-15 uses the bolt carrier group to forcibly reset the trigger after each shot. Fire on pull, BCG resets automatically, fire again immediately without releasing. One round per pull, mechanically faster than any manual reset.
Binary Trigger (Franklin Armory BFSIII)
A binary trigger fires one round on pull and one round on release — two rounds per trigger cycle. Switch between binary and standard semi-auto with the selector.
Side-by-Side Comparison
| FRT-15L3 ($450) | BFSIII ($319) | |
|---|---|---|
| Rounds per cycle | 1 (pull only) | 2 (pull + release) |
| Reset mechanism | BCG forces reset | Manual release |
| NFA required | No | No |
| Platforms | AR-15, HK MR, HK MP5 | AR-15 primarily |
| Made in USA | Yes | Yes |
Which Should You Buy?
- FRT-15 if you want maximum speed with single-round-per-pull control
- Binary trigger if you want a lower price and the pull+release pattern
- Both — many serious AR-15 shooters own both. They complement each other.
Shop our FRT-15 for sale page and our Franklin Armory BFSIII listing.