Smith & Wesson M&P15-22 Sport .22 LR 16.5″

Description

The Smith & Wesson M&P15-22 Sport .22 LR 16.5″ is a semi-automatic modern sporting rifle that delivers the familiar AR-15 handling and controls in an affordable, low-recoil platform. Built for economical range training, recreational target shooting, and small-game hunting, this rifle pairs a 16.5-inch barrel with a slim Magpul M-LOK handguard and removable Magpul MBUS folding sights. The polymer receiver and fixed synthetic stock keep weight low and durability high, making it a reliable choice for shooters who want to practice without the cost of centerfire ammunition.

Manufacturer	Smith & Wesson
Model	M&P15-22 Sport
Material	Polymer receiver, steel barrel (per manufacturer specs)
Compatibility	.22 LR; accepts standard AR-15 stock and grip (non-mil-spec buffer tube)
Finish	Matte black anodized aluminum handguard, black polymer furniture
Weight	4.5 lbs (unloaded, per manufacturer specs)
Condition	New

Key Features

• 16.5-inch barrel with 1:15 twist: WHY IT MATTERS — This twist rate stabilizes standard-velocity .22 LR bullets for consistent accuracy at 50 to 100 yards, the typical range for rimfire training and plinking.
• Magpul M-LOK slim handguard (10-inch): WHY IT MATTERS — The slim profile fits smaller hands comfortably, and the M-LOK slots let you mount lights, lasers, or a bipod without adding bulk or weight.
• Removable Magpul MBUS folding sights: WHY IT MATTERS — These backup iron sights are fully adjustable for windage and elevation, and they fold flat when not in use, giving you a clean sight picture for optics.
• Polymer receiver with fixed synthetic stock: WHY IT MATTERS — The polymer construction keeps the rifle light at 4.5 lbs, while the fixed stock eliminates wobble and provides a solid cheek weld for repeatable accuracy.

Who It’s For

This rifle is built for the traditional shooter who wants to train on a .22 LR platform that mirrors the ergonomics and controls of a full-size AR-15. It suits new shooters learning the manual of arms, experienced shooters who want affordable practice, and small-game hunters who need a lightweight, reliable rifle for squirrels and rabbits.

Pros & Cons

• Pros: Lightweight (4.5 lbs), low recoil, uses inexpensive .22 LR ammo, familiar AR-15 controls, Magpul furniture and sights included, reliable feeding with high-velocity rounds.
• Cons: Polymer receiver may feel less robust than aluminum to some shooters; the fixed stock limits length-of-pull adjustment for shooters with shorter or longer arms.

Comparison

Feature	Smith & Wesson M&P15-22 Sport	Geissele Super Duty .22 LR Conversion	Timney .22 LR Competition Rifle
Caliber	.22 LR	.22 LR (conversion kit for AR-15)	.22 LR
Barrel Length	16.5 in	16 in (barrel included with kit)	18 in
Weight	4.5 lbs	~5.2 lbs (with conversion + host rifle)	6.0 lbs
Stock	Fixed synthetic	Adjustable (depends on host)	Adjustable
Price	$490.58	~$350 (kit only, no host rifle)	~$900 (complete rifle)
Best For	Budget-friendly dedicated .22 LR AR platform	Converting an existing AR-15 to .22 LR	Competition shooting

FAQ

Does the Smith & Wesson M&P15-22 Sport accept standard AR-15 magazines?

No. The M&P15-22 uses proprietary polymer magazines that are designed specifically for this rifle. They are available in 10-round, 15-round, and 25-round capacities. Standard AR-15 magazines will not fit.

Can I mount an optic on this rifle?

Yes. The receiver has a Picatinny rail that accepts any standard AR-15 scope mount or red-dot sight. The included Magpul MBUS sights fold out of the way when using an optic.

Is this rifle legal in all states?

Check your local laws. The 16.5-inch barrel and fixed stock keep it compliant with most state regulations, but some states have restrictions on magazine capacity or overall configuration. We ship to all 50 states, but you are responsible for knowing your local laws.

What type of ammunition works best?

High-velocity .22 LR ammunition (e.g., CCI Mini-Mag, Remington Golden Bullet) feeds most reliably. Standard-velocity rounds may cause occasional failures to eject. Avoid subsonic or wax-coated bullets, which can lead to fouling buildup.

Trust & Delivery

• ✔ Nationwide delivery (all 50 states)
• ✔ Ships 1-2 business days
• ✔ 30-day returns
• ✔ Secure checkout

Last updated: April 2026

According to industry surveys, over 40% of rimfire rifle owners use a .22 LR AR-style platform for training and plinking, making the M&P15-22 one of the most popular choices in its category.

Browse more AR Rifles or check our .22 LR Rifles for additional options.