According to cabela's sporting Goods.
Crickett Single-Shot Rimfire Rifles
If you’re looking for a fun firearm to get your young shooter started with, consider these single-shot rimfire options. Each bolt-action model sports a blued barrel and the added safety feature of being able to shoot only one round at a time. This also teaches beginning shooters to make every shot count. All are lightweight and easy for youngsters to carry at the range and in the woods. Available: Davey Crickett – Durable synthetic stocks available in pink or black. Target-style peep sights. Weighs just 2.5 lbs. Chambered in .22 LR.
http://answers.cabelas.com/answers/8815/product/217335/crickett-crickett-single-shot-rimfire-rifles-questions-answers/questions.htm?sort=recentq
Added safety feature?? it only takes one shot to kill someone.
I had one of the little rifles when I was about 11. They only came chambered for the .22 cal short ammunition. There is a tremendous difference in the muzzle velocity between the short and the long rifle.
No child should ever be alone with a weapon that fires the .22 cal long rifle ammunition loaded or not.