The outstanding feature of the QC5 is that it is made for the use of 9x19mm MP5 magazines.  Available in a full range of hand guard and barrel lengths in either a rear or side charging receiver.  Users appreciate that in a QC10 complete build, all components are made for, not modified to work together.  This dependability is further strengthened by a life time warranty and dependable customer service. 

Specifications:

• Engineered for 9x19mm MP5 magazines
• Mil-Spec Lower parts
• Tested Buffer Tube, Spring and Weight and SB Tactical A3 brace
• Milled billet 7075-T6 Aluminum Lower Receiver
• QC10 Milled billet 7075-T6 Aluminum Side Charging Upper Receiver
• Type III Hard Coat Anodizing
• Made For The AR Platform- Not Modified
• Endless customization options
• Test fired before it leaves the factory
• Includes Carrying Case
• DOJ Cable Lock Included
• Quarter Circle parts are designed to work within mil-spec perimeters.  However, for optimum performance we recommend using QC10 parts for all your core elements, (receivers, bolt, barrel and adjustable buffer system).
• Made for- Not Modified.  Every QC10 product is engineered specifically for pistol caliber ammunition, not modified from an existing platform, increasing functionality, reliability and overall performance.