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Internet # 317795591

Model # P321K1N

ONE+ 18V 18-Gauge Cordless AirStrike Brad Nailer with 4.0 Ah Battery and Charger

$229.00
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  • Power To Sink 2 in. Nails In Hardwoods
  • Includes: 4.0 Ah Battery and 18V Charger
  • Over 300 ONE+ Products – All Work With Any RYOBI ONE+ 18V Battery
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Product Details

About This Product

RYOBI introduces the 18V ONE+ 18-Gauge Cordless AirStrike Brad Nailer with 4.0 Ah Battery and Charger. This Brad Nailer features AirStrike Technology, which eliminates the need for noisy compressors, bulky hoses, or expensive gas cartridges. This means faster setup and easy maneuverability on the job site. The RYOBI P321 Brad Nailer is capable of sinking up to 2 in. nails in hardwoods. Additionally, it is the lightest cordless brad nailer in its class, which helps prevent user fatigue. This nailer allows for extended periods of continuous work by sinking up to 1,900 nails per charge. It offers a 45% smaller nose for tight spot access and superior drive quality, compared to P320. There is also a tool-free depth of drive adjustment that allows for proper setting of nail heads. Great for window, door and cabinet trim, this Brad Nailer is the perfect addition to any carpenter or DIYer's tool collection. The included battery and charger are compatible with all RYOBI 18V Tools. Best of all, it is part of the RYOBI ONE+ System of over 300 Cordless Products that all work on the same battery platform. This tool is backed by the RYOBI 3-Year Manufacturer's Warranty and includes 2 non-marring pads, a 4.0 Ah Battery, an 18V Charger, and an operator's manual.

Highlights

  • Features AirStrike Technology, which eliminates the need for noisy compressors, bulky hoses, or expensive gas cartridges
  • 45% smaller nose provides tight spot access and superior drive quality (compared to the RYOBI P320)
  • Tool-free depth of drive adjustment helps protect work surface and allows proper setting of nail heads
  • Convenient adjustment dial regulates air pressure speed for optimal performance
  • Tool-free jam release for easy access to clear nails
  • 12% more compact for enhanced maneuverability (compared to the RYOBI P320)
  • 2 non-marring pads to keep work surface free of tool marks
  • The included battery and charger are compatible with all RYOBI 18V Tools
  • Part of the RYOBI 18V ONE+ System of Over 300 Cordless Products
  • 3-year manufacturer's warranty
  • Includes: (1) P321 18V ONE+ Cordless AirStrike 18-Gauge Brad Nailer, 2 non-marring pads, (1) PBP005 18V ONE+ 4.0 Ah Battery, (1) PCG002 18V ONE+ Lithium-Ion Charger, and operator's manual
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Product Information

Internet # 317795591

Model # P321K1N

Additional Resources

Shop All RYOBI

Specifications

Dimensions: H 9.61 in, W 3.62 in, D 10.87 in

Dimensions

Battery Charge Time (Hours)

80

Nail Angle

Straight

Nail Gauge

18 gauge

Product Depth (in.)

10.87 in

Product Height (in.)

9.61 in

Product Width (in.)

3.62 in

Details

Battery Amp Hours

4 Ah

Battery Voltage (V)

18V

Battery/Charger

(1) 4 Ah Battery & Charger Included

Charger Included

Charger Included

Cordless/Corded

Cordless

Loading Type

Strip

Maximum Fastener Size

2 in

Minimum Fastener Size

5/8 in

Multi-Purpose

Single Purpose

Nail Gun Angle

Straight

Nailer Features

Comfort Grip, Dry Fire Lockout, No-Mar Tip

Number of Total Batteries Included

1

Power Type

Cordless

Returnable

90-Day

Tool Weight (lb.)

6.07 lb

Tools Product Type

Air Tool

Questions & Answers

Will this charger work with an 18 V li ion 108wh (6.0Ah) battery?
ByAug 14, 2026
0 Answer | 
Answer This Question

What Nail brand will work
ByAug 13, 2026
1 Answer | 
Answer This Question

Hello, Dyir - The nail brand doesn't need to be specific. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI ONE+ 18V 18-Gauge Cordless AirStrike Brad Nailer (Tool Only) (P321).

By|Aug 14, 2026


    What does 4 flashing green lights mean?
    ByAug 13, 2026
    1 Answer | 
    Answer This Question

    Hello, Clyde - Four flashing green lights indicate that the battery is locked out. If you would, please contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI ONE+ 18V 4.0 Ah Lithium-Ion Battery (PBP005).

    By|Aug 14, 2026


      Will at 18v one+ batteries regardless of ah rating
      ByAug 3, 2026
      1 Answer | 
      Answer This Question

      Hello, Mike - We're sorry, we will need more information to answer your question. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI ONE+ 18V 4.0 Ah Lithium-Ion Battery (PBP005).

      By|Aug 5, 2026


        My new ryobi charger is black, on line for replacement it is green are they the same
        ByAug 2, 2026
        1 Answer | 
        Answer This Question

        Hello, Carolyn - If your charger is a PCG002, then it is the same as this one. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI ONE+ 18V Lithium-Ion Charger (PCG002).

        By|Aug 5, 2026


          What does the red green and yellow boxes on the charger stand for?
          ByJul 30, 2026
          1 Answer | 
          Answer This Question

          Hello, Bacan - The boxes on the charger show what the different light configurations mean. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI ONE+ 18V Lithium-Ion Charger (PCG002).

          By|Jul 31, 2026


            What type of battery does this use?
            ByJul 20, 2026
            1 Answer | 
            Answer This Question

            Hello, Amyah - This nailer accepts RYOBI 18V ONE+ batteries. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI ONE+ 18V 18-Gauge Cordless AirStrike Brad Nailer (Tool Only) (P321).

            By|Jul 23, 2026


              What comes with it
              ByJul 17, 2026
              1 Answer | 
              Answer This Question

              Hello, Woody99 - This nailer comes with two non-marring pads and an owner's manual. If you need further support, then feel free to ask another question. You can also contact us by phone at 1.800.525.2579, Monday - Friday from 9am to 6pm (EST), or via email when you visit us at https://www.ryobitools.com/support/contact. This question is from RYOBI ONE+ 18V 18-Gauge Cordless AirStrike Brad Nailer (Tool Only) (P321).

              By|Jul 19, 2026


                Viewing 1-8 of 363

                Customer Reviews

                4.5 out of 5

                • 4.5 out of 2,938 reviews
                • 83% recommend this product
                Filter by:
                Showing 1-10 of 2,938 reviews
                Product came in a box secured and free of damage. Battery works well with my ryobi tools. I regret not getting a bundle because we can plug into many different tools and fans.
                by
                This review is from ONE+ 18V Lithium-Ion Charger
                Getting ready to update some baseboard and needed a nail gun. Works very well, not too heavy and well balanced.
                by
                I initially underestimated this tool. It requires little to no pressure and cuts effortlessly, like butter. A great surprise.
                by
                This review is from ONE+ 18V Lithium-Ion Charger
                1 found this review helpful
                Really Useful
                I am really impressed with this Ryobi 18 gauge brad nailer. It’s lightweight, easy to use, and drives nails consistently without jams. Perfect for DIY projects and trim work. Battery life is solid too. Great tool
                by
                  This customer chose to rate the product and not provide text.
                  by
                  • Verified Purchase
                  1 found this review helpful
                  Quick shipping well packaged and decent charger not too fast though!
                  by
                  This review is from ONE+ 18V Lithium-Ion Charger
                  What a disappointment
                  I am a HUGE Ryobi fan with the exception of these nail guns. I have had it about 2 years and when it was new it worked great. 3rd time I used it the nails weren't going all the way in. I adjusted it over an over and they were still about 1/4 inch from going into the trim. Tried using it about a year later on another project and it doesn't work at all. I also have the 16 gauge nailer and it jams like crazy. I am very disappointed Ryobi.
                  by
                  Response from RYOBIJan 9, 2026
                  Hello, Jimmye4golf - We're sorry that you are having a difficult experience with your nailer. If you would, please reach out to us via our Rapid Repair page at https://ryobi.ryobitools.com/support/rapid-repair. RYOBIOutdoorTools
                    3 found this review helpful
                    Piece of junk
                    A pile of junk!!! Stop working when must need it… send it for repair takes more time that is worth it. If ryobi want to stop being considered a toy tool brand need to step up with the quality control, this charger is junk.
                    by
                    This review is from ONE+ 18V Lithium-Ion Charger
                    Response from RYOBIDec 16, 2025
                    Hello, Jdf504 - We are very sorry to hear that your charger has stopped working. If you would, please reach out to us via our Rapid Repair page at https://ryobi.ryobitools.com/support/rapid-repair. RYOBIOutdoorTools
                      1 found this review helpful
                      I bought this nailer recently to replace one that was stolen from my jobsite. I have found it to be a very good all-around trim nailer. The adjustments for nail depth and power of the strike are easy to make and seem to keep consistency after adjustment. Occasionally I will have a "misfire" in the sense that the nailer won't fire, but I think that is mostly happening when I don't have the nailer held perpendicular to the wood--so in that case it's mostly my fault and the gun isn't letting me shoot something too crooked. I don't find the gun too heavy or cumbersome. Overall I'd recommend it to anybody for a good finish nailer.
                      by
                      So glad to have finally 'pulled the trigger' and bought this Brad nailer for myself. I am a novice DIY homeowner with a modest single income. I specifically needed this tool to finish installing replacement glass into my 1927 wood storm window to rehang it before winter. It worked just as it should. The LED light is super helpful and best of all I didn't break the glass which I was terrified to do! It works with my other Ryobi 18v batteries so I was able to buy the tool only and it was an amazing value. Now I am working on a bathroom update and excited to use the nailer to add some decorative moldings and reinstall the other trim. Five stars all the way around!
                      by
                      Showing 1-10 of 2,938 reviews