Quarter Circle 10 QC5 Side Charging Receiver Set

The QC10 receiver set represents the bare essentials for a quality pistol/carbine build.  The stripped lower and upper with proprietary parts form a solid foundation from which to completely customize a pistol or carbine.  Some customers purchase this kit as an upgrade to their existing platforms, while others try their hand at matching the performance of  a QC10 full build with other components. Regardless, the QC10 Receiver kit ensures the heart of the build is American.  Made for, not modified, with a connection to Texas that no one else can match.

• QC10 Stripped QC5 Lower Receiver with proprietary parts
• Accepts mil-spec receiver extension (buffer tube)
• QC5 Side Charging Upper Receiver with Gibbz Arms Technology (Side Chargers not compatible with QC10 Keymod Handguards, check compatibility page to assure fit.)
• Latching, Non-Reciprocating Charging Handle
• Engineered for 9x19mm MP5 magazines
• Accepts QC10 Universal 9MM Bolt Assembly
• Type III Hard Coat Anodizing
• No Lower Parts Kit installed
• Made For the AR Platform- Not Modified
• Handguards with overlapping anti-rotation tabs may not be compatible with QC10 billet upper receivers, including Side Charging uppers.

NOTE: The QC5 product line does not feature a Last Round Bolt Hold Open (LRBHO). The Mp5 magazine does not have a provision to support it.