|
Brand |
Atomic Ammunition |
|
Caliber |
300 AAC Blackout |
|
Model |
Subsonic Cycling |
|
Bullet Weight |
220 Grain |
|
Bullet Type |
Hollow Point Boat Tail |
|
Reloadable |
Yes |
|
Case Type |
Brass |
|
Rounds Per Box |
100 Rounds Per Box |
|
Boxes Per Case |
5 Boxes Per Case |
|
Muzzle Energy |
538 ft lbs |
|
Muzzle Velocity |
1050 fps |
Atomic Ammunition’s .300 Blackout 220gr subsonic ammo is tuned for suppressed AR-15 reliability. This 220gr hollow point boat tail load delivers dependable semi-auto cycling, consistent subsonic velocity, and the quiet shooting experience the .300 BLK platform was designed to provide.
The .300 Blackout is the king of suppressed semi-auto shooting, and the 220gr subsonic is its signature load. Atomic’s cycling subsonic reliably feeds, fires, and ejects in standard AR-15 gas systems without the need for adjustable gas blocks. With a suppressor, noise drops below 125 dB – dramatically quieter than unsuppressed supersonic fire. The 538 ft-lbs of energy at the muzzle makes this an effective close-range option for home defense, and the match-grade HP BT delivers consistent accuracy at distances where subsonic shooting excels (inside 200 yards).
- We are unable to accept returns on ammunition. All ammunition sales are final.
- It is up to the customer to know all local laws and obey them. By purchasing ammunition or magazines you certify that you are 21 years of age.
- We offer the estimated delivery date at checkout for UPS and Fedex shipping. This is an estimate based on the current warehouse workflow and the shipping carrier's transit time.
- If your order requires manual review the shipping date may be delayed. Orders that need to be manually verified are flagged by our system. Typically we flag orders for manual verification if the billing and shipping address do not match, we need an ID on file to ship the order, or if the order is from a first time customer for a large amount. We will contact you promptly to verify your order or request an ID. To expedite this process feel free to contact us in advance to verify the order or submit your ID. Please submit the ID using the tools on the site to upload your ID. This info is displayed below under your corresponding state. Once you have been verified you will be put on a white list for future orders. We thank you for your help.

| Alaska | No ammunition |
|---|---|
| California |
Must be shipped to an FFL or Licensed Ammunition Vendor unless you are an exempt peace
officer. IF you have an FFL03 we can ship ammunition to you once on file, but you must
have an AVL issued by CA to transfer ammunition. View our California FFL and AVL dealer list and instructions for shipping to a CA FFL or AVL. Upload your FFL or AVL information (LEO Credentials if applicable) No tracer ammunition No magazines over 10 rounds |
| Connecticut |
No magazines over 10 rounds |
| Colorado | No magazines over 15 rounds |
| DC | No ammunition, no magazines over 10 rounds |
| Hawaii | No Ammunition, no magazines over 10 rounds, no Starter Pistols |
| Illinois | Must have an Illinois Firearms Owner Identification Card, no shipments to Chicago. Upload your IL Firearms Owner ID (FOID) Card |
| Maryland | No magazines over 10 rounds |
| Massachusetts | No Ammunition, no magazines over 10 rounds, no Starter Pistols |
| New Jersey | No magazines over 10 rounds, must have a New Jersey Firearms Purchaser Identification Card to
purchase ammunition Upload your NJ Firearms Purchaser ID Card |
| New York | No magazines over 10 rounds |
| New York City | No magazines over 10 rounds, all ammunition must be shipped to an FFL Upload your FFL for New York City delivery |