You must be 21 years or older to order ammunition. Ammunition must ship UPS ground. Due to safety considerations and legal/regulatory reasons, Ammunition may not be returned. Please check local laws before ordering. By ordering this Ammunition, you certify you are of legal age and satisfy all federal, state and local legal/regulatory requirements to purchase this Ammunition.
ATS X-Force 5.56x45mm Ammo 55 Grain Full Metal Jacket - SM556x45
Rated 4.64 out of 5 across over 852 verified reviews and growing, this ATS X-Force 5.56x45mm NATO load uses a 55 grain Full Metal Jacket bullet for range work and training. Built with brass cases, Boxer primers, and non-corrosive primers and powders, ATS ammo offers a practical option for shooters stocking up on 5.56.
Why Shooters Choose ATS 5.56x45mm NATO
- Range-Ready FMJ Load: The 55 grain Full Metal Jacket bullet is a common choice for training, practice, and high-volume range sessions because it is designed for consistent feeding in suitable rifles.
- 5.56x45mm NATO Performance: This load is rated at 3001 fps with 1100 ft lbs of muzzle energy, giving shoppers clear performance specs before they buy.
- Brass-Cased Construction: Brass cases are reloadable in many setups and are widely preferred by shooters who want smooth cycling and familiar range handling.
- Boxer-Primed Design: The Centerfire / Boxer primer setup is manufacturer-stated for smooth feeding, helping make this ATS ammunition suitable for various rifle platforms.
- Non-Corrosive Components: ATS lists non-corrosive primers and powders, which supports easier post-range maintenance when standard cleaning practices are followed.
- Practical Packaging: Available as a Box of 20 or Case of 540, this load works for both smaller range trips and bulk planning.
- ATS X-Force Lineup: The ATS X-Force series is positioned for dependable range and training performance in the 5.56 category.
What Customers Say
Customer feedback shows a 4.64 out of 5 rating across over 852 verified reviews, with over 677 5-star reviews and growing.
These are great for the price, I picked up more on a recent sale. Good 5.56, combat accurate, but like other 5.56 55 grain not meant for precision shooting. good groups. But again probably the best out there for the price.
Michael V.
Ammo fires well and is as accurate as standard 55 gn. 5.56. The packaging is poorly designed and has to be handled with care. 5 out of 6 box's came apart in my range bag. Again good ammo crappy packaging.
Bryan W.
Getting 2.5 moa ammo does seem a little on the hot side. Only shot 100 rounds but they all functioned like they should and am getting typicall accuracy for this type of ammo. Great value hope to buy more.
Travis B.
What is the muzzle velocity of this ATS 5.56x45mm NATO 55 grain Full Metal Jacket ammo?
The listed muzzle velocity is 3001 fps. The listed muzzle energy is 1100 ft lbs.
Is this ATS ammo brass-cased?
Yes. The verified specs list a Brass case with a Centerfire / Boxer primer.
Does this ATS 5.56 ammo have sealed primers?
Yes. According to the manufacturer, this ammunition has a sealed primer.
What is this 55 grain Full Metal Jacket load intended for?
The manufacturer describes it as a choice for range sessions and training exercises. Full Metal Jacket bullets are generally used for practice and target shooting in compatible rifles.
Is the 5 box limit per order?
The original guidance stated that the 5 box limit was believed to be per order. The later update stated that the limit had been removed, with an apology for the confusion.
What packaging options are listed for this ATS X-Force load?
The verified packaging is Box of 20 / Case of 540. That gives shoppers a smaller box option and a case option for bulk planning.
About ATS 5.56x45mm NATO
ATS X-Force 5.56x45mm NATO ammunition pairs a 55 grain Full Metal Jacket bullet with brass-cased, Boxer-primed construction. The manufacturer lists non-corrosive primers and powders, plus a sealed primer, making this a straightforward training load for shooters who want clear component details.
Full Metal Jacket bullets are generally used for target shooting, drills, and range practice rather than expanding terminal performance. With a listed muzzle velocity of 3001 fps and muzzle energy of 1100 ft lbs, this ATS ammo gives rifle owners a defined spec profile for comparing 5.56 training loads.
Similar Products You May Also Like
| Manufacturer |
PMC |
| Caliber |
5.56x45mm NATO |
| Bullet Type |
Full Metal Jacket |
| Grain |
55 |
| Muzzle Velocity |
3270 fps |
| Muzzle Energy |
1306 ft lbs |
See Full Product Info
| Manufacturer |
PMC |
| Caliber |
5.56x45mm NATO |
| Bullet Type |
Full Metal Jacket |
| Grain |
62 |
| Muzzle Velocity |
3100 fps |
| Muzzle Energy |
1323 ft lbs |
See Full Product Info
| Manufacturer |
Fiocchi |
| Caliber |
5.56x45mm NATO |
| Bullet Type |
Full Metal Jacket |
| Grain |
55 |
| Muzzle Velocity |
3240 fps |
| Muzzle Energy |
1282 ft lbs |
See Full Product Info
| Manufacturer |
Federal |
| Caliber |
5.56x45mm NATO |
| Bullet Type |
Full Metal Jacket |
| Grain |
55 |
| Muzzle Velocity |
3165 fps |
| Muzzle Energy |
1223 ft lbs |
See Full Product Info
| Manufacturer |
Federal |
| Caliber |
5.56x45mm NATO |
| Bullet Type |
Full Metal Jacket |
| Grain |
55 |
| Muzzle Velocity |
3165 fps |
| Muzzle Energy |
1223 ft lbs |
See Full Product Info
For shooters comparing 5.56x45mm NATO range ammunition, this ATS X-Force load combines a 55 grain FMJ bullet, brass cases, Boxer primers, and listed performance specs. Choose a box for the range or a case when you want bulk ammo from the ATS lineup, with applicable case free-shipping options handled at checkout.
| Field | Details |
| MPN | SM556x45 |
| UPC | 5318000016125 |
| Manufacturer | ATS Ammunition |
| Platform | Rifle |
| Ammo Application | Target Shooting / Training |
| Ammo Type | Full Metal Jacket (FMJ) |
| Caliber | 5.56x45mm NATO Ammo |
| Grain Weight | 55 |
| Quantity Per Package | Box of 20 / Case of 540 |
| Test Barrel Length | Not Provided |
| Muzzle Velocity | 3,001 fps |
| Muzzle Energy | 1,100 ft-lbs |
| Ballistic Coefficient (G1) | Not Provided |
| Case Type | Brass |
| Primer Type | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Lead Free | No |
| Staked Primer | Not Provided |
| Country of Origin | Macedonia |
BULK AMMO - FREE SHIPPING
We offer Free Shipping on bulk ammo purchases for sale online at cheap discount prices. A case of ammo is a bulk ammo purchase.
Look for "FREE Shipping" next to the bulk ammunition price, add the eligible ammo to your cart, and it will be automatically applied to all orders with eligible bulk ammo products. No coupon code needed 24 hours a day, 7 days a week at Target Sports USA.
UNLIMITED FREE Shipping available on all orders with Target Sports AMMO+ Membership!