Aim7 A-4 Blast Diffuser Kit – Plan-B Steel System | .900″x24 Internal / 1.125″x28 External
Description
Aim7 A-4 Blast Diffuser Kit – Plan-B Steel System | .900″x24 Internal / 1.125″x28 External
🔊 Forward Blast Control • Thread Protection • Modular Setup
🔧 Product Overview
The Aim7 A-4 Plan-B Blast Diffuser System is a modular blast-forwarding device designed to redirect concussive gases away from the user and serve as a thread protector when shooting unsuppressed. It is not a flash hider and offers no flash suppression capability.
This kit includes a steel Plan-B adapter (0.900″ × 24 TPI internal) with an Alpha-compatible 1.125″ × 28 TPI external thread, allowing integration with various modular mounting systems. The included front caps let you customize your setup for visual preference or directional effect.
🧰 Package Includes:
1 × Aim7 Plan-B Adapter (.900″x24 internal, 1.125″x28 TPI external)
Material: SUS303 Stainless Steel1 × Spacer (2.5″) – Aluminum
1 × Coupler (1.0″) – Aluminum
1 × Front Cap (Choose One):
BravoCone
OC
Multi Port
Multi-Port Inverted
AlphaCloak
Single Hole (Threaded)
BARREL LENGTH AND FIRING RESTRICTIONS
- 7.5” – 5.56/223 and 7.62×39
- 10.5” – 6 ARC, 6.5 Grendel and other similar cartridges
- 12.5” – 308, 6.5 creedmoor, 6mm creedmoor, 243 winchester and other similar cartridges
- 16” – 300 win mag, 7mm rem mag, 300 PRC and other similar cartridges
- 18” – 300 RUM and 300 Norma mag
📐 Specifications
| Attribute | Detail |
|---|---|
| Overall Length | Approx. 4.5″ |
| Weight | 3.4 – 3.9 oz (with cap) |
| Internal Thread | 0.900″ × 24 TPI |
| Outer Thread | 1.125″ × 28 TPI (Alpha) |
| Caliber Range | Designed for .355 (9mm) and smaller projectiles |
| Adapter Material | SUS303 Stainless Steel |
| Spacer / Coupler | Aluminum |
✅ Key Features
🚫 Reduces perceived side concussion — channels gases forward
🔧 Modular system – works with multiple cap styles
🔩 Protects muzzle threads when suppressor is removed
🔄 Compatible with Plan-B and Alpha thread interfaces
🛠️ Precision CNC machined from stainless steel and aluminum
⚙️ Designed for systems using 9mm and smaller caliber projectiles
🔗 Adapter Compatibility
The included Alpha Adapter (1.125″x28) connects to:
Q Cherry Bomb
Rearden Plan-B style mounts (FHD, Mini, SPB, RPB, R2S)
Alpha-thread suppressors such as:
SilencerCo Omega 9K / 45K
Rugged Obsidian 9 / 45
Griffin Revolution
Harvester 300
And the other 1.125″x28 TPI modular systems
Use of an alignment rod is always recommended to confirm concentricity when integrating modular systems.
🛑 Disclaimer
This item is not a firearm or a regulated item. It is not capable of firing or chambering a projectile.
It is a threaded modular accessory intended for lawful use in compatible mounting systems.
Buyer is responsible for ensuring compliance with local laws before purchasing.
By purchasing, you confirm you are 18 years of age or older and legally allowed to own this item.
Additional information
| FRONT CAP | Bravo – (3273), OC (Open End) – (3277), Holes – (2530), Single Hole – (2546), Multi Hole Inverted – (2762), AlpaCloak – (2806), Single Hole Threaded – (2600) |
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