The CMMG Drop In .22 LR AR-15 Conversion Kit is what you need to turn your AR-15 rifle into a plinking machine. This conversion kit converts a standard .223 Remington or 5.56 NATO chambered AR-15 into .22 Long Rifle, allowing you to practice without spending a fortune at the range. The magazine holds 25 rounds of ammunition. For best performance use a round style hammer as notched hammers can cause function issues and 36 grain plated nose bullets have proven to be the best choice for function.
Features and Specifications:
Manufacturer Number: 22BA64E
Echo Series Drop in conversion kit
Caliber: .22 Long Rifle
Forward assist adapter
No permanent modification to firearm
Finish: Matte Gray
Fits:
Most Standard AR-15 rifles chambered in .223 Remington or 5.56 NATO
Includes:
Charging Handle
One 25 round magazine
    
            Features and Specifications:
Manufacturer Number: 22BA64E
Echo Series Drop in conversion kit
Caliber: .22 Long Rifle
Forward assist adapter
No permanent modification to firearm
Finish: Matte Gray
Fits:
Most Standard AR-15 rifles chambered in .223 Remington or 5.56 NATO
Includes:
Charging Handle
One 25 round magazine
                        
                            Excellent quality function is very good accuracy remained good I would recommend this for anyone who is looking to stay with a familiar action and lower target shooting prices                        
                    
                    
                    October 4, 2021
                    
                Great drop in plinker set
                            
                        
                            Great drop in plinker setup. No need to change upper out. Simply pull thecrear pin, remove bcg & charging handle, drop inthe echo, and plink away!                        
                    
                    
                    November 5, 2016
                    
                
                        Does this work with Radical Firearms AR15 RF16 ?                    
                    
                    
                            Answer:
                            If your RF16 is chambered in .223 Remington/5.56 NATO, then this kit should work.
                        
                        
                    