AR-15 Line
AR-15 4.5" .22LR Dedicated Upper Assembly with M-LOK Handguard & Flash Can Comp
The 4.5" .22LR Dedicated Upper Receiver from Moriarti Armaments is the perfect upgrade for your AR-15 platform, designed to provide top-tier performance with a compact barrel length. Featuring a 4.5-inch barrel, a 4-inch Free-Float M-LOK handguard, and a flash can linear compensator, this upper offers exceptional functionality for .22LR shooting. Whether you’re looking for precision, reliability, or minimal recoil, this upper will elevate your shooting experience.
Key Features:
Dedicated .22LR Upper Receiver:
- This upper is designed specifically for .22LR ammunition, providing reliable performance for both recreational shooting and training. The slick-side forged 7075 T6 receiver offers durability and a streamlined design.
Short Barrel & Handguard Configuration:
- The 4.5" barrel is paired with a 4" Free-Float M-LOK handguard, allowing for increased customization options with M-LOK accessories. The flash can compensator extends past the handguard to reduce muzzle flash and recoil.
Stainless Steel Bolt:
- The bolt is constructed from stainless steel, ensuring long-lasting durability and smooth cycling. It uses an anti-jam dedicated .22LR charging handle for a consistent shooting experience.
Compatible with CMMG or Similar Components:
- This upper is fully compatible with CMMG .22LR components, allowing for easy integration and component interchangeability. The barrel, bolt, and components follow the same patterns as CMMG for a seamless fit.
Complete Assembly:
- Includes Bolt Carrier Group (BCG), charging handle, and all necessary parts for installation. The upper is ready to be mounted on your standard AR lower receiver.
Specifications:
- Caliber: .22LR
- Upper Receiver: Slick Side Forged 7075 T6 Aluminum
- Bolt: Stainless Steel Construction
- Barrel: 4.5" Length, 1:16 Twist Rate, Medium Taper Profile
- Muzzle Device: Flash Can Linear Compensator
- Handguard: 4" Free-Float M-LOK
- Charging Handle: Anti-Jam .22LR
- Muzzle Thread: 1/2x28
- Compatibility: Standard AR Lower Receivers
- Made In The USA
Ammo Recommendation:
For optimal performance, Moriarti Armaments recommends using CCI .22LR Mini-Mag 36 Grain Copper-Plated Hollow Point Varmint Ammo (1,260 FPS) for this upper. Underpowered or economy-grade ammunition may result in less-than-optimal cycling and performance, so we advise using high-quality ammo for reliable function.
Why Choose the 4.5" .22LR Dedicated Upper?
Compact and Lightweight: The 4.5-inch barrel and short handguard design make this upper ideal for close-range shooting, varmint hunting, and plinking, while still maintaining accuracy.
No Buffer or Buffer Spring Required: This upper operates without the need for a buffer or buffer spring. However, using a buffer and spring is recommended to prevent light primer strikes.
Fully Tested: Every upper is rigorously tested and inspected before being shipped, ensuring top-quality functionality and reliability.
Customizable: With its M-LOK handguard, you have the flexibility to add a variety of accessories for further customization, enhancing your shooting experience.
Perfect for:
- Recreational Shooters: Whether you’re plinking, varmint hunting, or just enjoying the range, the 4.5" .22LR Dedicated Upper delivers precision and performance.
- Training and Drills: With its affordable ammo and reduced recoil, this upper is an excellent choice for training, helping shooters improve their skills on the AR-15 platform without the expense of centerfire ammunition.
- Varied Configurations: The M-LOK handguard allows you to attach lights, grips, or other accessories for a complete tactical setup.
Upgrade your AR-15 with the 4.5" .22LR Dedicated Upper Receiver from Moriarti Armaments and experience the versatility, reliability, and precision of a compact .22LR rifle. Order yours today and enjoy enhanced shooting performance on a proven platform!
Images may not be the exact representation of the product.
Top Customer Reviews
1
5/5
Excellent Compact .22LR Upper – Reliable, Fun, and Surprisingly Accurate
I was looking for a dedicated .22LR upper that would provide reliable performance while keeping ammunition costs low, and this 4.5” upper delivered exactly that. The fit and finish are excellent, and the M-LOK handguard feels solid and comfortable in hand. Installation was straightforward and the upper fit perfectly on my AR-15 lower.
Reliability has been outstanding with multiple types of .22LR ammunition. Unlike conversion kits, the dedicated .22LR design cycles smoothly and consistently. The compact 4.5” barrel makes for a lightweight and maneuverable setup, while the flash can gives it an aggressive look and helps direct muzzle blast forward.
Accuracy is impressive for such a compact package, making it perfect for plinking, range practice, and introducing new shooters to the AR platform. If you’re looking for an affordable and dependable rimfire upper, this is an excellent choice. Great quality, great value, and a lot of fun to shoot.
Reliability has been outstanding with multiple types of .22LR ammunition. Unlike conversion kits, the dedicated .22LR design cycles smoothly and consistently. The compact 4.5” barrel makes for a lightweight and maneuverable setup, while the flash can gives it an aggressive look and helps direct muzzle blast forward.
Accuracy is impressive for such a compact package, making it perfect for plinking, range practice, and introducing new shooters to the AR platform. If you’re looking for an affordable and dependable rimfire upper, this is an excellent choice. Great quality, great value, and a lot of fun to shoot.
06/10/2026
