BG Complete 4.5" .22LR Upper Receiver - Black | 4" M-LOK | Flash Can | With BCG & CH

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Product Code: BG4522LR4-BLK
MSRP: $464.95
Sale Price: Sale Price: $292.95
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Builder's Grade Complete 4.5" .22LR Dedicated Upper Receiver | 4.5" Mini Barrel | 4" Free Float M-LOK Handguard | Flash Can Comp | With Bolt Carrier Group and Charging Handle

This mini .22 Rimfire Complete Upper Receiver comes with our 4.5 inch barrel and a 4 inch Free-Float MLOK rail, with the linear flash can compensator extending past the handguard. The bolt is made of all stainless steel construction and we use an anti-jamb dedicated 22 charging handle.

Our complete 22LR upper receivers are fully compatible with CMMG or similar 22 components. Our barrels and bolts are fully interchangeable and follow the same pattern as CMMG.

Every upper is rigorously inspected before and after being test fired, so light fouling may be present.

Compatible with RTB/CMMG .22 magazines, which you can find here

  • Caliber: 22LR
  • Upper Receiver: Slick Side Forged 7075 T6
  • Bolt: Stainless Steel Construction
  • Barrel: 4.5 inch / 1:16
  • Handguard: 12 inch Free-Float M-LOK
  • Muzzle Device: Flash Can Linear Compensator
  • Charging Handle: Anti-Jamb 22lr
  • Compatible with standard AR lower receivers
  • Made in USA
Caliber .22LR
Length 4.5"
Material 4140 CrMo
Profile Medium Taper
Finish SBN
Gas System Length None
Gas Block Journal N/A
Dimpled? No
Twist Rate 1:16
Muzzle Thread 1/2x28
Please note: All semi-auto rimfire firearms operate best with quality copper plated and full powered or high velocity 22lr ammunition.

Although .22lr AR builds do not utilize the functionality of a buffer or buffer spring, we still recommend using both to provide a stopping point/wall that prevents the 22 bolt carrier from moving rearward. Using a buffer and buffer spring will prevent light primer strikes. This is true for all
Ciener/Atchisson 22 pattern platforms.

All NFA/ATF Rules Apply

Depending on your state and local laws, you could use this barrel with a lower receiver that is a Registered SBR, or Pistol. Possession of this barrel along with a Non-NFA lower receiver may be Prohibited. We are not lawyers and the above information is not legal advise. Make sure you understand the most up to date federal, state and local laws before proceeding with this product.