Bushmaster M4 Patrolman’s 5.56 NATO 16in 10+1
Pros & cons
What works
- Compliance-ready with fixed 10-round magazine — no aftermarket modification needed for restrictive states.
- Salt-bath nitride barrel finish provides 3-4 times the corrosion resistance of standard phosphate coating.
- Forged 7075-T6 aluminum receiver exceeds the tensile strength of cheaper 6061-T6 by over 30,000 PSI.
- Mil-spec buffer tube and stock allow for immediate replacement with any commercial or mil-spec stock assembly.
Trade-offs
- Fixed magazine makes clearing malfunctions and unloading slow — requires a tool to break the action open.
- A2 front sight post is non-adjustable for windage without a specialized tool, unlike a fold-down MBUS Pro.
- No rail real estate on the standard handguard — adding a light or laser requires a $80-$120 replacement drop-in quad-rail.
- Matte black finish is thin and shows wear on high-contact points after approximately 500 handling cycles.
Video review
Expert review
Specs at a glance
About this product
What is the Bushmaster M4 Patrolman's 5.56 NATO 16in 10+1? It's a semi-automatic, compliance-configured AR-platform rifle built around a forged 7075-T6 receiver and a durable 16-inch cold hammer forged barrel with a salt-bath nitride finish. This package delivers a familiar, mil-spec control layout and A2-style iron sights, but its defining characteristic is the factory-installed, non-detachable 10-round magazine that meets specific state regulations without modification. Its 6.70 lb weight and 35.25-inch overall length make it a maneuverable option for controlled training environments where high-capacity isn't a priority or isn't legal.
What is the Bushmaster M4 Patrolman's used for?
This rifle is designed for law-abiding recreational shooting, foundational marksmanship training, and compliance-driven ownership in restricted jurisdictions. Its primary function is to provide a reliable, no-frills platform for practicing fundamentals with standard-pressure 5.56 NATO or .223 Remington ammunition, making it suitable for range sessions under 200 yards. The fixed 10-round magazine simplifies compliance paperwork in states like New York or California, while the nitride-treated barrel ensures longevity through hundreds of rounds per session without excessive heat degradation.
How does the Bushmaster M4 Patrolman's compare to the Stevens 334 in .308 Winchester?
The Bushmaster is a superior option for rapid follow-up shots and modular accessory attachment, whereas the Stevens 334 Rifle in .308 Win is better for precise, single-round engagements at longer distances. The Patrolman's semi-automatic action allows for faster target re-acquisition and training drills, while the bolt-action Stevens 334 offers inherently greater mechanical accuracy potential from its 20-inch barrel and locked-breech design. The Patrolman's AR platform also accepts thousands of aftermarket parts, from handguards to triggers, which the Stevens' proprietary system does not.
What does it weigh and what are the dimensions?
The rifle weighs 6.70 pounds (108.8 ounces or 3.04 kg) and has an overall length of 35.25 inches with the stock fully extended. Collapsed to its shortest position, the overall length reduces to approximately 31.5 inches, making it manageable for transport in a standard 36-inch rifle case. The 16-inch barrel has a 1:7 twist rate, optimized for stabilizing heavier 62-77 grain projectiles commonly used in defensive and match loads, and the handguard diameter is 1.75 inches, compatible with most drop-in carbine-length accessories.
Who is this NOT for?
This rifle is not for competitive 3-Gun shooters, individuals seeking a home defense primary weapon, or anyone in unrestricted states wanting standard capacity. The fixed 10-round magazine is a severe tactical limitation in dynamic shooting sports, where 30 or 40-round magazines are standard, and the A2 birdcage flash hider is less effective at muzzle control than a modern compensator. For a dedicated sporting clay or bird hunting platform, a shooter would be better served by a purpose-built option like the Stevens 555 Sporting O/U 12 Gauge.
What's in the box?
You receive the complete rifle with the fixed 10-round magazine installed, one included detachable carry handle for the rear sight, and a basic owner's manual covering field-stripping and safety. The package does not include any optic, sling, cleaning kit, or additional magazines, as the fixed magazine design makes replacements a gunsmith-level operation. All necessary pins, springs, and controls are installed and headspaced from the factory, requiring only a basic sight adjustment tool (not included) to zero the iron sights.
Is the Bushmaster M4 Patrolman's worth it at $926.99?
At this price point, it represents fair value for buyers in restrictive states who need a compliant rifle out of the box, but it's a compromise for those in free states. The cost reflects the compliance engineering and the forged 7075-T6 receiver set, which is more durable than the extruded aluminum used on some budget ARs, but you are paying a premium for the fixed magazine system. For about $150 more, buyers in unrestricted areas could purchase a standard AR-15 with a detachable magazine release and multiple PMAGs, offering significantly greater versatility.
Key attributes
| upc | 604206200174 |
| manufacturer | Bushmaster |
| manufacturer part number | 00-10004-CA |
| action | Semi-Auto |
| atf type | RIFLE |
| barrel length | 16" |
| caliber/gauge | .223 REM/5.56 NATO |
| capacity | 10 + 1 |
| length | 41.5 |
| number of magazines | 1 10 Round |
| package height | 3.5 |
| package width | 11.5 |
| product type | Rifle |
| safety | Manual |
| shipping weight | 9.8 |
| sights | Fixed Front/Carry Handle Rear |
| sights type | Adjustable Sights |
Frequently asked questions
- Is it compatible with standard AR-15 parts?
- Yes, the upper and lower receivers, barrel nut, buffer tube, and fire control group are all mil-spec dimensionally and accept standard replacement parts. However, the lower receiver is permanently modified to accept only the included fixed 10-round magazine, so standard magazine catches and releases will not function without irreversible alteration by a qualified gunsmith.
- Does this work with a .223 Wylde chambered barrel?
- No, this rifle comes with a standard 5.56 NATO chamber. While you can safely fire .223 Remington ammunition, the barrel is not interchangeable with a .223 Wylde barrel without also swapping the barrel extension and ensuring proper headspacing, a job that requires specialized tools and roughly 45 minutes of competent armorer work.
- Can I attach a suppressor to the muzzle?
- Yes, the barrel features standard 1/2x28 threads protected by an A2 birdcage flash hider, which can be removed with an armorer's wrench. You must first ensure your suppressor is rated for 5.56 NATO and submit the appropriate ATF Form 4 with a wait time currently averaging 8 months. Use a quality crush washer or precision shims when mounting to avoid alignment issues.
- How long does shipping take to an FFL?
- Processing and shipping typically take 3-5 business days from Ironclad Armory to your selected Federal Firearms License holder. Transit time varies by carrier, but expect an additional 2-7 business days for ground service. Your FFL must then log the firearm into their bound book before notifying you for pickup, which can add another 1-3 days.