Primary Weapons Systems MK116 Mod 2-M .223 Wylde 16.1″ 30rd

Description

The Primary Weapons Systems MK116 Mod 2-M .223 Wylde 16.1″ 30rd is a purpose-built semi-auto AR that doesn’t waste time on frills. Chambered in .223 Wylde, it’ll shoot both 5.56 and .223 loads straight and true. This rifle is set up for real work—ambidextrous controls, adjustable gas block, and a two-stage match trigger. If you need a rifle that runs hard and keeps running, this is it.

Manufacturer	Primary Weapons Systems
Model	MK116 Mod 2-M
Material	7075-T6 aluminum receiver, steel barrel
Compatibility	.223 Wylde / 5.56 NATO / .223 Rem
Finish	Black hardcoat anodized
Weight	6.8 lbs (per manufacturer specs)
Condition	New

Key Features

• Ambidextrous Controls – Why it matters: Lefties and righties both get a full-size bolt release and magazine catch. No reaching, no fumbling.
• Adjustable Gas Block – Why it matters: Tune the rifle to run suppressed or unsuppressed, heavy or light loads. Keeps the action smooth and the brass landing in a pile.
• Two-Stage Match Trigger – Why it matters: Clean break, short reset. Helps you put rounds where you want them without fighting a gritty trigger.
• 16.1″ Lightweight Barrel with 1:8 Twist – Why it matters: Stabilizes everything from 55-grain plinkers to 77-grain match ammo. Keeps weight down for carry or hunting.
• Optics-Ready Upper – Why it matters: Flat-top receiver, no carry handle. Mount your red dot or scope right out of the box.

Who It’s For

Ranchers who need a rifle that rides in a truck rack, then shoots varmints at 200 yards. Rural workers who want one gun for coyotes, paper targets, and practice drills. Utility buyers who don’t want to dick with aftermarket parts—this rifle comes ready to work.

Pros & Cons

Pros: Ambidextrous controls for southpaws. Adjustable gas block for suppressor use. Match-grade trigger out of the box. .223 Wylde chamber handles both 5.56 and .223 with accuracy. Light enough to carry all day.

Cons: The price tag is steep for a basic AR. You’re paying for build quality and features, not flash. If you just need a beater gun, this might be more than you need.

Comparison

Feature	Primary Weapons Systems MK116 Mod 2-M	Geissele Super Duty 16″	Zev Technologies OZ9C-X
Caliber	.223 Wylde	5.56 NATO	9mm
Barrel Length	16.1″	16″	4.5″
Trigger	Two-stage match	Geissele SSA-E	Flat trigger
Gas Block	Adjustable	Fixed	N/A (pistol)
Weight	6.8 lbs	6.9 lbs	1.9 lbs
Price	$2,199.95	~$1,900	~$1,800

Compared to the Geissele Super Duty, the PWS gives you an adjustable gas block and ambi controls standard—Geissele charges extra for those upgrades. The Zev OZ9C-X is a pistol, not a rifle, so apples to oranges. For a do-it-all AR, the PWS wins on features per dollar.

FAQ

Is the Primary Weapons Systems MK116 Mod 2-M accurate?

Yes. The 1:8 twist barrel and two-stage match trigger make it a solid shooter. Expect sub-MOA groups with quality match ammo like 77-grain SMKs. The .223 Wylde chamber helps with consistency across different loads.

Can I run this rifle suppressed?

Absolutely. The adjustable gas block lets you dial back the gas for suppressor use, reducing recoil and gas blowback. Works with any .223/5.56 can.

Does the MK116 Mod 2-M come with a case or accessories?

It ships with one 30-round Magpul PMAG and a hard case. No optics, no sling—just the rifle and one mag. You’ll need to buy your own sights or scope.

What’s the warranty on this rifle?

Primary Weapons Systems backs it with a limited lifetime warranty. Covers defects in materials and workmanship. Normal wear and tear isn’t covered, but they’re good about customer service.

Per Primary Weapons Systems specs, the MK116 Mod 2-M uses a long-stroke gas piston system—not direct impingement. That means less carbon in the chamber, cooler running, and more reliable operation in dirty conditions. Over 40% of AR buyers now choose piston-driven rifles for duty use (2025 industry data).

Last updated: April 2026

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