You may get a hold of a free copy of the book here. With any mil-standard upper receiver, this will function. Use a round style hammer for optimal results because notched hammers can interfere with function. 36 grain plated nose bullets have been shown to be the most effective choice. three 25-round magazines are included.
Caliber: .22 LR
Compatibility: 5.56 / .223 AR Platform Rifles
BCG Material: Stainless Steel
Includes: (3) 25 Round Magazines