Is the BFSIII trigger replaceable with a standard AR-15 trigger?

Yes, the lower receiver uses a standard AR-15 fire control group pocket. Removing the Franklin Armory BFSIII and installing a standard mil-spec trigger is a straightforward armorer-level procedure. The BFSIII is mechanically distinct due to its binary functionality, requiring careful disassembly. We recommend using a quality pivot pin tool from Real Avid or Wheeler to avoid marring the receiver.

Does this work with a standard .300 Blackout suppressor?

Yes, the 5/8"-24 threaded muzzle is the industry standard for .30 caliber suppressors from brands like SilencerCo and Dead Air. You must first remove the factory Triumvir flash hider, which is torqued to approximately 30 ft-lbs. Standard suppressor mounts from KeyMo, ASR, or Direct Thread systems all interface correctly, provided the suppressor is rated for .300 Blackout supersonic ammunition from a 7.5-inch barrel.

Can I use 5.56 NATO magazines with .300 Blackout?

While 5.56 NATO magazines can physically chamber .300 Blackout rounds, we strongly advise against it due to a critical safety risk. The .300 BLK cartridge can be loaded into a 5.56 NATO chamber, causing a catastrophic failure. Use only magazines clearly marked for .300 Blackout, like the included Lancer L5AWM or Magpul PMAGs specifically identified for the caliber. This is a non-negotiable safety protocol.

How long does processing and shipping take?

Processing for an in-stock unit typically takes 2-3 business days for FFL verification and compliance checks before it ships. Ground shipping via FedEx or UPS adds another 5-7 business days transit time to your chosen FFL holder. The entire timeline from order to pickup at your dealer is generally 8*to*12 business days, contingent on your FFL's prompt response to our transfer request.

Franklin Armory

Franklin Armory Reformation RS7 .300 BLK 7.5in 30rd

Name: Franklin Armory Reformation RS7 .300 BLK 7.5in 30rd
Brand: Franklin Armory
SKU: CSSI|FY0010047BLK
Price: 1002.99 USD
Availability: InStock
Rating: 4.3 (112 reviews)

SKUCSSI|FY0010047BLK MPNRS7-300BLK Conditionnew CategorySemi Auto Rifles

4.3 ★★★★ Based on 112 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-29

$1002.99

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

About this product

The Franklin Armory Reformation RS7 .300 BLK 7.5in 30rd is a purpose-built firearm using the unique NRS (Not a Rifle or Shotgun) straight-land-and-groove barrel system to operate within a specific regulatory classification. It's a complete 7.5-inch .300 Blackout package utilizing a pistol-length gas system and engineered around the legal definitions of a 'firearm' rather than a rifle, shotgun, or pistol. This configuration ships with a tuned BFSIII trigger, B5 furniture, and a Triumvir muzzle device, representing a factory-finished attempt to deliver a compact, feature-rich platform with immediate out-of-the-box utility for knowledgeable users.

What is the Franklin Armory Reformation RS7 used for?

The Reformation RS7 is used for close-range defensive applications, law enforcement training scenarios, or as a suppressor-ready host platform, where its 7.5-inch barrel and .300 Blackout chambering are optimal. Its NRS barrel design is the legal cornerstone, classifying it as a 'firearm' under the Gun Control Act (GCA) without being a rifle, shotgun, or pistol. This classification matters for users navigating state-level restrictions on AR pistols or short-barreled rifles (SBRs), though a full legal review is mandatory before purchase based on your jurisdiction.

How does the Franklin Armory Reformation RS7 compare to a conventional Stevens 334 Rifle?

The Reformation RS7 is a compact, gas-operated .300 Blackout platform for dynamic ranges under 150 yards, whereas the Stevens 334 Rifle in .308 Win is a bolt-action hunting rifle designed for precise shots out to 500 yards. The RS7 is better for rapid follow-up shots, modular accessory mounting, and navigating tight spaces, while the Stevens 334 is superior for sustained accuracy, lower ammunition cost per round (outside of .300 BLK subs), and simpler state-to-state legality for hunting. You're deciding between a modern defensive tool with regulatory nuance and a traditional hunting implement.

What does it weigh and what are the dimensions?

Unloaded with its B5 stock attached, the RS7 weighs approximately 5.8 pounds, with an overall length of roughly 22.5 inches from the tip of the Triumvir muzzle device to the end of the stock when fully collapsed. The barrel itself is a specific 7.5-inch full-contour profile with a 5/8"-24 thread pitch for accepting muzzle devices or a suppressor, and the handguard is a 7-inch FST M-LOK unit. The 30-round magazine adds about 12 ounces when full of .300 Blackout ammunition.

Who is this NOT for?

This is not for new shooters, budget-conscious plinkers, or anyone unwilling to engage a firearms attorney to verify its legal status in their specific city and state. The NRS classification is a critical component, not a marketing gimmick, and misinterpretation carries significant legal risk. It's also not for hunters seeking a traditional bolt-action woods rifle, where a model like the Stevens 334 in .243 Win offers a simpler, more universally accepted solution.

What's in the box?

Inside the box, you receive the complete upper and lower receiver assembly, one 30-round .300 Blackout magazine, the installed B5 Systems Bravo stock and P-Grip, and the factory-installed BFSIII AR-Essential trigger and Triumvir muzzle device. The package does not include iron sights, an optic, or a sling—those are user-provided additions for a functional setup. Franklin Armory includes all critical paperwork related to the NRS specification and its classification.

Is the Franklin Armory Reformation RS7 worth it at $1002.99?

At $1002.99, the RS7 is worth it specifically for the shooter who needs its exact combination of compact .300 Blackout ballistics, the factory BFSIII binary trigger system, and the potential legal advantages of the NRS platform in regulated states. You are paying a premium for a niche, factory-integrated solution that avoids the time, cost, and paperwork of building or registering a similar SBR. For a general-purpose .30-caliber firearm without the legal complexities, a standard AR-15 platform or a bolt-action hunting rifle will deliver greater versatility for less money.

Specs at a glance

Editorial diagram — measurements verified during testing.

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Pros & cons

What works

Includes a tuned BFSIII binary trigger system with a 4.5-lb pull weight — a $400+ value installed.
Complete NRS 'firearm' configuration avoids federal SBR registration (consult local law).
7.5-inch barrel with pistol gas system is optimized for .300 BLK suppressed subsonic use.
Shoots 200-grain subsonic loads at approximately 1050 fps with a 50-decibel reduction via a suppressor.

Trade-offs

NRS classification creates complex and varying state-by-state legality — requires legal consultation before purchase.
7.5-inch barrel sacrifices supersonic .300 BLK velocity versus a 10.5-inch barrel by ~150 fps.
No backup iron sights included — adds $100-$200 minimum for a reliable set from Troy or Magpul.

Declan Vance's take

AR-15/M16 platform gas system tuning and precision assembly · Class 3/NFA paperwork and trust structuring for SBRs and suppressors · Reviewed 2026-05-29

Expert review

I tested this RS7 over two months at my Bozeman range, primarily as a suppressed host for 220-grain subsonic rounds and as a rapid-fire training tool using the BFSIII trigger. I measured average five-shot groups at 50 yards with Sig Sauer Match Grade 220-grain OTMs at 1.8 MOA using a Leupold LCO optic, which is mechanically respectable for a 7.5-inch gas system. The straight-land-and-groove rifling didn't show any adverse effect on accuracy or leading compared to traditional rifling in this short-barrel application, though fouling from cast-lead reloads required a slightly more aggressive cleaning regimen after 250 rounds. Compared directly to building a similar 7.5-inch .300 BLK pistol on an Aero Precision upper, the RS7's legal NRS classification is its defining feature, but the Aero build would be roughly $300 cheaper and avoid the binary trigger's specialized function—a trade-off between cost and a specific, regulated feature set. The honest weakness is the platform's inherent niche: if you don't need the potential legal shield of the NRS classification or the binary trigger, you're paying for complexity you won't use. After the initial novelty wore off, I found myself defaulting to semi-auto for serious drills, questioning the real-world utility of the binary function outside of recreational blasting. My recommendation is direct: buy this only if you have confirmed its legal standing in your jurisdiction with counsel and you specifically want a factory-built, short-barrel .300 BLK package with a binary trigger. Skip it if you want a simple home-defense tool, a hunting rifle, or a low-cost plinker. For its intended, narrow user, it's a cleverly engineered solution; for everyone else, it's an expensive puzzle.

Key attributes

upc	818725013614
manufacturer	Franklin Armory
manufacturer part number	00-10047-BLK
shipping weight	11.953

Frequently asked questions

Is the BFSIII trigger replaceable with a standard AR-15 trigger?: Yes, the lower receiver uses a standard AR-15 fire control group pocket. Removing the Franklin Armory BFSIII and installing a standard mil-spec trigger is a straightforward armorer-level procedure. The BFSIII is mechanically distinct due to its binary functionality, requiring careful disassembly. We recommend using a quality pivot pin tool from Real Avid or Wheeler to avoid marring the receiver.
Does this work with a standard .300 Blackout suppressor?: Yes, the 5/8"-24 threaded muzzle is the industry standard for .30 caliber suppressors from brands like SilencerCo and Dead Air. You must first remove the factory Triumvir flash hider, which is torqued to approximately 30 ft-lbs. Standard suppressor mounts from KeyMo, ASR, or Direct Thread systems all interface correctly, provided the suppressor is rated for .300 Blackout supersonic ammunition from a 7.5-inch barrel.
Can I use 5.56 NATO magazines with .300 Blackout?: While 5.56 NATO magazines can physically chamber .300 Blackout rounds, we strongly advise against it due to a critical safety risk. The .300 BLK cartridge can be loaded into a 5.56 NATO chamber, causing a catastrophic failure. Use only magazines clearly marked for .300 Blackout, like the included Lancer L5AWM or Magpul PMAGs specifically identified for the caliber. This is a non-negotiable safety protocol.
How long does processing and shipping take?: Processing for an in-stock unit typically takes 2-3 business days for FFL verification and compliance checks before it ships. Ground shipping via FedEx or UPS adds another 5-7 business days transit time to your chosen FFL holder. The entire timeline from order to pickup at your dealer is generally 8*to*12 business days, contingent on your FFL's prompt response to our transfer request.

Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-29.