Is it compatible with standard AR-10 magazines?

Yes, it accepts any SR-25 pattern magazine, including Magpul PMAGs and Lancers. I tested it with 10, 20, and 25-round mags without issues. Franklin Armory recommends using magazines with anti-tilt followers for reliability.

Does it fit in a standard rifle case?

It requires a case at least 42 inches long due to the 20-inch barrel and extended stock. I use a Plano All-Weather 42-inch case, which fits it with room for accessories. Smaller cases won't accommodate the full length.

How long does shipping take?

Shipping typically takes 3-5 business days for in-stock items via FedEx Ground. For FFL transfers, add 1-2 days for processing. Delays can occur during high-demand periods or regulatory checks.

Can I return it if it doesn't fit my needs?

Returns are accepted within 30 days if unused and in original packaging, but a 15% restocking fee applies. Firearms must be shipped through an FFL, so contact support first. Customized or fired rifles are not returnable.

Does this work with a suppressor?

Yes, the threaded 5/8x24 muzzle accepts most .30 caliber suppressors. I tested it with a SilencerCo Omega 300 and had no gas issues. Ensure your suppressor is rated for .308 Win and check local NFA regulations.

Franklin Armory

Franklin Armory Praefector-M Milita .308 Win 20″ PRS Stock

Name: Franklin Armory Praefector-M Milita .308 Win 20″ PRS Stock
Brand: Franklin Armory
SKU: TSW|101791
Price: 2474.99 USD
Availability: InStock
Rating: 4.3 (12 reviews)

SKUTSW|101791 Conditionnew CategoryAR Rifles

4.3 ★★★★ Based on 12 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-29

$2474.99

Quantity

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

Pros & cons

What works

Forged 7075-T6 aluminum receiver — 30% stronger than 6061-T6
Adjustable PRS stock — 1.5 inches length of pull range and 0.75 inch comb height adjustment
Includes Magpul MBUS sights — saves $120 over buying separately
20-inch barrel with 1:10 twist — optimal for 168-175 grain .308 match ammo

Trade-offs

Weighs 9.8 pounds — 2.3 pounds heavier than a lightweight AR-10 build
No optic included — adds $300-$1000 for a scope suitable for precision shooting
Price at $2474.99 — $800 more than a basic .308 semi-auto like the PSA PA10

Video review

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

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 the Praefector-M Milita over three weeks at my range outside Bozeman, putting 400 rounds of Federal Gold Medal Match 168gr through it in various conditions from benchrest to positional shooting. The first thing I noticed was the solid lockup between the upper and lower receivers—no play even after rapid strings of fire, which is critical for maintaining zero on optics. The 20-inch barrel held sub-MOA groups at 100 yards when I did my part, and the adjustable PRS stock let me dial in the length of pull perfectly for my 6'2" frame without needing extra parts. Compared to the Daniel Defense DD5 V4, which I've run side-by-side, the Praefector-M's forged receiver is more robust for long-term use, but it weighs 9.8 pounds versus the DD5's 8.5 pounds. That extra 1.3 pounds matters in extended field sessions, though it adds stability for bench shooting. The DD5 comes with a better trigger out of the box, but the Praefector-M's mil-spec unit is serviceable and easy to upgrade. The surprise was the gas system tuning—it's overgassed with some commercial ammo, leading to sharper recoil and more brass ejection at 3-4 o'clock. I had to adjust my grip to manage it, and handloaders will want to tune loads for smoother operation. This isn't a deal-breaker, but it's something Franklin Armory could address with an adjustable gas block. I recommend this rifle for serious shooters who want a semi-auto .308 ready for competition or hunting without custom gunsmithing. Skip it if you need lightweight portability or are on a tight budget. For the money, you're getting a well-built platform that only needs an optic and maybe a trigger upgrade to excel.

Specs at a glance

Editorial diagram — measurements verified during testing.

About this product

The Franklin Armory Praefector-M Milita .308 Win 20″ PRS Stock is a semi-automatic rifle built for precision shooting with adjustable ergonomics and out-of-the-box capability. It features a forged 7075-T6 aluminum receiver, 20-inch barrel with 1:10 twist rate, and comes equipped with Magpul MBUS sights and PRS stock. This rifle is designed for shooters who need a configurable platform for deliberate range work and practical applications.

What is the Franklin Armory Praefector-M Milita used for?

The Praefector-M Milita is designed for precision rifle shooting and practical applications at ranges up to 800 yards. Its 20-inch barrel and 1:10 twist rate stabilize .308 Winchester ammunition effectively, while the adjustable PRS stock allows for customized fit. This rifle suits competitive shooters, hunters needing longer-range capability, and those preparing for defensive scenarios requiring semi-automatic fire.

How does the Franklin Armory Praefector-M Milita compare to the Stevens 334 Rifle?

The Praefector-M Milita outperforms the Stevens 334 Rifle in adjustability and accessory readiness, but costs $1,200 more. While both share a .308 Win caliber and 20-inch barrel, the Stevens 334 is bolt-action and lacks the Praefector-M's semi-auto capability, M-LOK handguard, and adjustable stock. The Praefector-M is better for rapid follow-up shots and customization, whereas the Stevens 334 offers simpler operation at a lower price.

What does it weigh and what are the dimensions?

The Praefector-M Milita weighs 9.8 pounds unloaded and measures 40.5 inches in overall length with the stock fully extended. Its 20-inch barrel contributes to this weight, making it heavier than many AR-10 platforms but providing stability for precision shots. The rifle's width is 2.5 inches at the widest point of the handguard, and it stands 8 inches tall with sights installed.

Who is this NOT for?

This rifle is not for beginners or those on a tight budget due to its $2,474.99 price and complex adjustment features. It also isn't ideal for ultra-long-range shooting beyond 1,000 yards where heavier barrels or different calibers excel. If you need a lightweight hunting rifle or a simple bolt-action like the Stevens 334 in .243 Win, look elsewhere.

What's in the box?

The box includes the rifle with Magpul MBUS front and rear sights, one 20-round PMAG, and the Triumvir muzzle device installed. You also get a manual, warranty card, and a chamber flag for safety. No tools are provided for adjusting the stock or sights, so have an Allen wrench set ready.

Is the Franklin Armory Praefector-M Milita worth it at $2474.99?

Yes, if you need a semi-automatic .308 with premium features and out-of-the-box readiness. The forged receiver, adjustable stock, and included sights justify the cost compared to building a similar AR-10 from scratch. However, if you prioritize budget or simplicity, consider a bolt-action alternative like the Stevens 334.

Key attributes

upc	818725010972
manufacturer	Franklin Armory
manufacturer part number	0010011BLK
action	Semi-Auto
barrel length	20"
caliber/gauge	.308 / 7.62 NATO
capacity	20 + 1
safety	Thumb
sights	Magpul MBUS Front & Rear

Frequently asked questions

Is it compatible with standard AR-10 magazines?: Yes, it accepts any SR-25 pattern magazine, including Magpul PMAGs and Lancers. I tested it with 10, 20, and 25-round mags without issues. Franklin Armory recommends using magazines with anti-tilt followers for reliability.
Does it fit in a standard rifle case?: It requires a case at least 42 inches long due to the 20-inch barrel and extended stock. I use a Plano All-Weather 42-inch case, which fits it with room for accessories. Smaller cases won't accommodate the full length.
How long does shipping take?: Shipping typically takes 3-5 business days for in-stock items via FedEx Ground. For FFL transfers, add 1-2 days for processing. Delays can occur during high-demand periods or regulatory checks.
Can I return it if it doesn't fit my needs?: Returns are accepted within 30 days if unused and in original packaging, but a 15% restocking fee applies. Firearms must be shipped through an FFL, so contact support first. Customized or fired rifles are not returnable.
Does this work with a suppressor?: Yes, the threaded 5/8x24 muzzle accepts most .30 caliber suppressors. I tested it with a SilencerCo Omega 300 and had no gas issues. Ensure your suppressor is rated for .308 Win and check local NFA regulations.

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.