Keystone 722 Precision .22 LR 16.5in Threaded Bolt Rifle

The Keystone 722 Precision .22 LR 16.5in Threaded Bolt Rifle is a production rimfire chassis gun built around a MOD X PT aluminum stock and a heavy, threaded bull barrel. It ships with a blued finish, a collapsible/folding urban sniper stock, and a single detachable magazine. The 1-in-16″ twist and 1/2×28 thread pattern make it ready for suppressor use and precision rimfire work out of the box.

Manufacturer	Keystone Sporting Arms
Model	722 Precision
Material	Steel barrel, aluminum chassis stock
Compatibility	.22 LR (standard and high-velocity)
Finish	Blued barrel and receiver
Weight	Approx. 7.2 lbs (per manufacturer specs)
Condition	New

Key Features

• Heavy Threaded Bull Barrel – The 16.5-inch barrel with 1/2×28 threading lets you mount a suppressor or brake without adapter plates. This reduces recoil impulse and keeps the muzzle down for faster follow-up shots on steel.
• Collapsible/Folding Aluminum Stock – The MOD X PT chassis folds to the left, cutting overall length by roughly 8 inches for pack or case storage. The collapsing buttpad adjusts length of pull on the fly, critical for shooting from barricades or with heavy clothing.
• 1-in-16″ Twist Rate – Optimized for standard-velocity and subsonic .22 LR ammunition. This twist stabilizes 40-grain projectiles cleanly out to 150 yards, keeping vertical dispersion under 0.5 MOA at 50 yards with match ammo.
• Single Detachable Magazine – The included 10-round magazine feeds reliably and drops free for fast reloads. No need to top-load a tubular mag at a PRS rimfire stage.
• Blued Finish – Traditional rust-resistant bluing on the barrel and receiver gives a low-glare surface that won’t reflect sunlight during field matches or hunting.

Who It’s For

This rifle targets the rimfire precision shooter who wants a chassis system without spending $1,500+. It works for NRL22 base class, steel plate practice out to 200 yards, and small-game hunting where a folding stock helps pack into brush. The threaded barrel also suits shooters who run a suppressor for reduced report on private land or at quiet ranges.

Pros / Cons

Pros: Factory-threaded barrel, folding stock for compact carry, 1-in-16″ twist matches match ammo, sub-$600 price point for a chassis rifle, detachable magazine.

Cons: The trigger is a factory unit with some creep—most shooters will swap it for a Timney or Jard after a few hundred rounds. Also, the aluminum stock lacks the full-length ARCA rail of higher-end chassis, so you’ll need an adapter for bag riders or tripod mounts.

Comparison vs. Competitors

Feature	Keystone 722 Precision	Zev Technologies Rimfire Chassis	Lone Wolf Distributors .22 LR Build
Price	$569	$1,299	$899 (barrel + receiver only)
Barrel Thread	1/2×28, factory threaded	1/2×28, factory threaded	1/2×28, aftermarket
Stock	MOD X PT folding aluminum	Zev aluminum folding	Polymer adjustable
Twist Rate	1:16″	1:16″	1:16″
Magazine	10-round detachable	10-round detachable	10-round detachable
Weight	7.2 lbs	8.1 lbs	6.8 lbs
Best For	Budget NRL22 / training	Competition-ready out of box	Custom builders

FAQ

What is the twist rate on this Keystone 722 Precision?

The barrel has a 1-in-16″ twist, which is standard for .22 LR and works well with 36- to 40-grain bullets. It stabilizes match ammo like SK Standard+ and Eley Tenex at 50 yards with sub-0.5 MOA groups.

Will this rifle accept a suppressor?

Yes. The barrel is threaded 1/2×28, the most common rimfire suppressor thread pitch. You can direct-thread most .22 cans (e.g., SilencerCo Sparrow, Dead Air Mask) without an adapter.

Does the stock fold for storage?

Yes. The MOD X PT chassis has a left-side folding hinge. When folded, the rifle’s overall length drops to approximately 28 inches, making it easy to fit in a backpack or a compact rifle case.

What magazines does the 722 Precision use?

It uses a single-stack, 10-round detachable magazine unique to Keystone. Extra mags are available from Keystone directly or through major rimfire accessory retailers.

Is this rifle good for NRL22 base class?

Yes. The heavy barrel, threaded muzzle, and detachable magazine meet base-class rules. The folding stock is allowed. The factory trigger will be the limiting factor for stage transitions, but a trigger swap keeps it competitive.

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Last updated: April 2026