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Most people who want a binary trigger end up buying one separately and installing it themselves. Franklin Armory skipped that step for you. The BFSIII-M4 comes with the Binary Firing System GEN 3 already installed and function tested at the factory, dropped into their FAI-15 lower. Flip the selector to the third position and the rifle fires one round on the pull and one on the release, which makes for seriously quick split times and some of the most grin-inducing range sessions you'll ever have. Prefer to keep things traditional? The second position runs it like any standard semi-auto, and you can cancel a release round by simply moving the selector out of binary mode while holding the trigger back.
The upper is machined from 7075-T6 aluminum and wears a 16 inch LTW contour barrel with a 1:7 twist, so it stabilizes everything from light varmint loads to heavier 77 grain match ammo. The midlength gas system is a nice touch at this price point, smoothing out the recoil impulse compared to a carbine-length setup and helping you keep a clean cadence in binary mode. A salt bath nitride bolt carrier group and low-profile gas block keep things running under a free-floated 15 inch FST handguard with M-LOK slots at the 3, 6, and 9 o'clock positions plus a full-length Picatinny rail up top.
This rifle ships optics ready with no iron sights, so plan on adding a red dot, LPVO, or backup irons to the top rail. The A2 grip and 6-position M4 stock are proven basics, and since this is a standard AR-15 platform, swapping furniture or even running a different upper down the road is simple. The A2 muzzle device sits on standard 1/2×28 threads if you want to change it out later.
The binary trigger isn't just for fast mag dumps, though it does those very well. Controlled pairs come quicker and more consistently than with any standard trigger, which is why these rifles show up at competition stages and not just casual range trips. One 30 round magazine is included, so you're ready to load up and go.
The BFSIII is a 3-position trigger. Position one is safe, position two runs like a normal semi-auto with one round per pull, and position three is binary mode, firing one round when you pull the trigger and one when you release it. If you change your mind mid-pull, you can cancel the release round by moving the selector out of binary mode while holding the trigger back.
No, this rifle ships optics ready with no iron sights installed. The full-length Picatinny rail on the upper and handguard gives you plenty of real estate for a red dot, magnified optic, or a set of backup irons. Most buyers pair it with a red dot since the binary trigger shines at closer, faster shooting.
The 1:7 twist is on the faster side, which means it stabilizes heavier bullets really well, including 62 to 77 grain loads. It still shoots common 55 grain range ammo just fine, so you can feed it affordable bulk ammo for binary fun and step up to heavier match loads when you want tighter groups. Being chambered in 5.56 NATO, it safely runs both 5.56 and .223 Remington.
Absolutely. The second selector position functions exactly like a standard semi-auto AR-15, firing one round per trigger pull. Binary mode is completely optional, so you can treat this like a conventional rifle for zeroing, slow-fire practice, or anytime you just want to plink normally.
| UPC | 818725012235 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 00-10048-BLK |
| Action | |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Capacity | 30 + 1 |
| Number of Magazines | 1 30 rd. |
| Shipping Weight | 12.47 |
| Sights | Optics Ready |
| Units per Box | 1 |
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