Atomic Ammunition Cycling Defense AD77 5.56x45mm NATO 77 grain Boat Tail Hollow Point Brass Cased Rifle Ammo 100 Rounds
No ratings yetBest price
$159.49at OpticsPlanet
Out of stock Sale checked Nov 10, 2026
In stock now instead
- Fiocchi Field Dynamics 40 gr V-Max .223 Rem 200 Round Ammo Can $162.99at Ammunition Depot
- UMC JHP 223 Remington 45gr Jacketed Hollow Point 200/Box $170.49at Ammunition Depot
- Norma Range & Training 5.56 55gr FMJ, 250rd $147.53at Kentucky Gun Co
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $159.49Salechecked Nov 10, 2026 | Out of stock | Buy at OpticsPlanet |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Similar ammunition in stock
This part is out of stock at every store we track. These similar ammunition are in stock, with today's prices.
Fiocchi Field Dynamics 40 gr V-Max .223 Rem 200 Round Ammo Can
$162.99 at Ammunition Depot · 8 stores
In stock
UMC JHP 223 Remington 45gr Jacketed Hollow Point 200/Box
$170.49 at Ammunition Depot · 9 stores
In stock
Norma Range & Training 5.56 55gr FMJ, 250rd
$147.53 at Kentucky Gun Co · 5 stores
In stock
Black 223 Remington 62gr FMJ Full Metal Jacket 200/Case
$176.99 at Brownells
In stock
Anniversary Frontier 223 Remington 55gr FMJ 250/Ammo Can
$139.99 at Brownells · 7 stores
In stock Sale
We People 223 Remington 55gr Full Metal Jacket 250/Bucket
$129.99 at Brownells · 3 stores
In stock Sale
Price history
Dashed line = out of stock. Tracking since Nov 5, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $159.49 | $159.49 | $159.49 |
Since Nov 5, 2026.
About this part
The Atomic Ammunition Cycling Defense AD77 5.56x45mm NATO 77 grain Boat Tail Hollow Point Brass Cased Rifle Ammo 100 Rounds is a 5.56 / .223 ammunition from Atomic Ammunition. One store lists it, OpticsPlanet at $159.49.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
Specifications
- Manufacturer
- Atomic Ammunition
- Caliber
- 5.56 mm NATO
- Bullet weight
- 77 gr
- Casing
- Brass
From the manufacturer
Atomic Ammunition Cycling Defense AD77 5.56x45mm NATO 77 grain Boat Tail Hollow Point Brass Cased Rifle Ammo 100 Rounds. 56 NATO 77gr Cycling HP BT defensive round built on the 77gr OTM profile that set the standard for 5.56 terminal performance. Purpose-built for home defense duty carry and 3-Gun delivering sub-MOA accuracy superior terminal effect and better barrier performance than standard ball ammunition. The AD77 is Atomics purpose-built 77gr OTM (Open Tip Match) defensive load for the AR-15 platform. The 77gr boat tail profile is the benchmark for precision 5.56 engagement selected for its superior accuracy terminal effect and barrier performance over standard 55gr and 62gr ball ammunition. Atomic loads it to a higher standard. Every AD77 round is built with new-production brass match-grade 77gr HP BT projectiles and precision-weighed powder charges inspected for the tight tolerances required to deliver sub-MOA accuracy and consistent 2750 fps muzzle velocity across every lot. Heavier bullet higher ballistic coefficient. That means less wind drift more energy retained at distance and effective terminal performance out past 600 yards. The hollow point boat tail provides controlled expansion while reducing deflection through intermediate barriers like drywall and auto glass. The 77gr OTM isnt new its the spec that proved what 5.56 could do when loaded right. The AD77 is Atomics answer to how it should be loaded. Built for: Home defense duty carry and 3-Gun competition. Optimized for 1:7 and 1:8 twist barrels. Specifications for Atomic Ammunition Cycling Defense AD77 5.56x45mm NATO 77 grain Boat Tail Hollow Point Brass Cased Rifle Ammunition: Manufacturer: Atomic Ammunition Caliber: 5.56x45mm NATO Bullet Type: Boat Tail Hollow Point (BTHP) Bullet Weight: 77 grain Cartridge Case Material: Brass Muzzle Velocity: 2750 ft/s Muzzle Energy: 1294 ft-lbs Application: Self-Defense Package Contents: Atomic Ammunition Cycling Defense AD77 5.56x45mm NATO 77 grain Boat Tail Hollow Point Brass Cased Rifle Ammunition What is Atomic Ammunition Cycling Defense AD77 5.56x45mm NATO 77 grain Boat Tail Hollow Point Brass Cased Rifle Ammunition good for? The manufacturer suggests that it is suitable for self-defense.Atomic Ammunition CART-556-77GR-HPBT-DEF-100: Cycling Defense AD77 5.56x45mm NATO 77 grain Boat Tail Hollow Point Brass Cased Rifle Ammo 100 Rounds
Rating
No ratings yet
Log in to rate this part.
Comments
Please log in to read and leave comments.