Description
There's a reason 10.5 inch 5.56 builds are one of the most popular AR pistol formats out there. They keep enough barrel to get real velocity out of the cartridge while trimming the overall package down to something you can move with, store easily, and run comfortably from a truck, a tight hallway, or a cramped shooting bay. The Shark Coast Tactical Maxim leans into that formula with a parts list that makes sense instead of cutting corners where you'd notice.
What the Maxim Brings to the Bench
The 10.5 inch barrel wears a black nitride treatment, which hardens the steel inside and out for better wear resistance and easier cleanup compared to bare or parkerized finishes. The muzzle is threaded, so swapping to your preferred brake, flash hider, or suppressor mount is a five minute job. Up top, the aluminum receiver carries a full Picatinny rail for optics and backup sights, and the free floating style M-LOK handguard gives you slots for lights, hand stops, and sling mounts without the bulk of old school quad rails.
Why the SBA3 Brace Matters on This Build
Short 5.56 pistols live or die by how well you can stabilize them, and the SB Tactical SBA3 is one of the most proven braces on the market. It's adjustable, it rides on a standard carbine style buffer setup, and it includes an integrated QD sling socket. Paired with the polymer grip, the whole setup points naturally and balances well with the shorter barrel out front.
Feeding the Shark Coast Maxim
With a 30+1 capacity and standard AR-15 magazine compatibility, keeping this thing fed is simple. Semi-auto operation and a familiar thumb safety mean anyone who has spent time behind an AR platform will feel at home immediately. Whether this is your first AR pistol or an addition to a growing safe, the Maxim covers the fundamentals with quality components and leaves plenty of room to make it your own.
Key Specifications
- Manufacturer: Shark Coast Tactical
- Model: Maxim
- Manufacturer Part Number: SCC07213MAX-P
- UPC: 810188107213
- Caliber: .223 Rem / 5.56 NATO
- Action: Semi-Auto
- Barrel Length: 10.5 inches
- Barrel Finish: Black Nitride
- Muzzle: Threaded
- Capacity: 30+1
- Receiver: Aluminum with Picatinny Rail
- Handguard: M-LOK
- Brace: SB Tactical SBA3, Polymer
- Grip: Polymer
- Safety: Thumb Safety
What’s Included
- Shark Coast Tactical Maxim 5.56 NATO AR pistol
- One 30-round magazine
Frequently Asked Questions
Can I run a suppressor on the Shark Coast Tactical Maxim?
Yes, the 10.5 inch barrel comes threaded from the factory, so it will accept standard muzzle devices and suppressor mounts. Just verify the thread pitch matches your mount before ordering, and keep in mind short barreled 5.56 runs loud and gassy suppressed, so a well tuned setup makes a big difference.
What is the advantage of the black nitride barrel on the Maxim?
Nitride treatment hardens the barrel steel both inside the bore and on the exterior surface. That translates to solid corrosion resistance, longer barrel life, and easier cleaning compared to untreated finishes. It's a proven treatment that holds up well to high round counts.
Does the Shark Coast Maxim take standard AR-15 magazines?
It does. This is a standard AR pattern pistol in 5.56 NATO, so it accepts common AR-15 magazines from Magpul, Duramag, and other major makers. It ships set up for 30+1 capacity out of the box.
Is a 10.5 inch barrel enough for 5.56 NATO?
For close to medium range work, absolutely. A 10.5 inch barrel is the sweet spot for compact 5.56 builds, giving you noticeably more velocity than shorter 7.5 inch pistols while keeping the overall package short and maneuverable. Pick ammo loaded for short barrels and you'll get reliable performance where these platforms shine.


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