Description
Few rimfire rifles have earned their reputation the way the M&P15-22 has, and this Sport OR version sweetens the deal by shipping with Smith & Wesson's MP-100 red/green dot already mounted on the full-length top rail. The optic runs a 4 MOA dot you can switch between red and green with adjustable brightness, plus windage and elevation adjustments and flip-open lens caps. Pick it up, get it zeroed, and you are burning through a 25-round magazine the same afternoon you bring it home.
Why the M&P15-22 Sport OR Makes Sense
The whole point of this rifle is familiar AR handling without the cost per trigger pull. The controls are laid out like a centerfire AR, with a functioning charging handle, receiver-mounted thumb safety, and a six-position adjustable stock that fits everyone from new sharpshooters to full-grown adults. The dedicated .22 LR blowback action runs in a lightweight polymer receiver, keeping the whole rifle around 5.2 pounds, so long range sessions and new-shooter lessons stay comfortable. It is a smart trainer for anyone running a centerfire AR, and just as good as a first rifle or a squirrel and small game setup.
Built Like the Big M&P15
Up front you get a 16.5 inch carbon steel barrel with a 1-in-15 twist, threaded 1/2×28 and capped with an A2 flash hider, so muzzle devices are an easy swap later on. The 10 inch M&P slim handguard carries Magpul M-LOK slots for lights, hand stops, or a bipod, and Smith & Wesson tosses in a 2 inch M-LOK rail panel to get you started. Owners consistently praise how reliably these rifles cycle a wide range of ammo, which is not something every semi-auto rimfire can claim.
Between the included optic, the 25-round magazine, and years of proven track record behind the 15-22 line, this is the rimfire AR we point people toward when they want maximum range time for their ammo budget.
Key Specifications
- Manufacturer Part Number: 12722
- UPC: 022188879193
- Caliber: .22 LR
- Action: Semi-Auto Blowback
- Capacity: 25+1
- Barrel Length: 16.5"
- Barrel Material: Carbon Steel, Matte Black
- Muzzle: A2 Flash Hider, 1/2×28 Threads
- Twist Rate: 1-in-15
- Optic: MP-100 Red/Green Dot, 4 MOA
- Handguard: 10" M&P Slim with Magpul M-LOK
- Stock: 6-Position Adjustable CAR-Style
- Receiver: Polymer
- Overall Length: 31.6" – 33.8"
- Weight: 5.2 lbs
- Safety: 2-Position Thumb Safety
What’s Included
- M&P15-22 Sport OR rifle
- Factory-mounted MP-100 red/green dot optic with flip-open lens caps
- 1 x 25-round magazine
- 2" M-LOK rail panel
- Cable lock
- Owner's manual
Frequently Asked Questions
Does the M&P15-22 Sport OR come with an optic, or do I need to buy one?
This model ships with the MP-100 red/green dot optic already mounted from the factory. It runs a 4 MOA dot with adjustable brightness in both red and green, 1/4 MOA windage and elevation clicks, and unlimited eye relief. It uses a single CR1620 battery and includes flip-open lens caps, so all you need to do is zero it and go.
Is the barrel on the M&P15-22 Sport OR threaded?
Yes, the 16.5 inch carbon steel barrel is threaded in the standard 1/2×28 pattern and comes with an A2 flash hider installed. That makes swapping muzzle devices straightforward if you want to change the setup down the road.
Does the M&P15-22 use standard AR-15 magazines and parts?
It uses dedicated M&P15-22 magazines rather than centerfire AR mags, and this one includes a single 25-rounder. The controls, safety, charging handle, and overall layout mirror a standard AR, and many common AR grips and stocks will swap over. It is a dedicated rimfire platform though, so fire control and internal parts are specific to the 15-22.
What ammo runs best in the M&P15-22?
These rifles have a strong reputation for cycling a wide variety of .22 LR reliably, which is rare for a semi-auto rimfire. High-velocity loads like CCI Mini-Mag are a safe bet for break-in, and most owners report solid results with bulk range ammo too. Like any blowback .22, keeping the bolt and chamber reasonably clean helps it stay running smooth.







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