Quarter Circle 10 9mm Complete AR15 Lower / Upper Set w/ Maxim CQB - Glock Pattern

Quarter Circle 10 GSF 9mm Complete Dedicated AR15 Billet Lower and Dedicated Upper Set w/ Maxim CQB Stock - Glock pattern.  QC10.  AXTS 45/90 Selector

Colt Pattern Quarter Circle 10 billet lower GSF

• Maxim Defense CQB / PDW stock w/ JP silent captured spring.  4 position, collapsible w/ QD sling mounts.  This is the latest generation from Maxim specifically designed by JP for use with 9mm (heavier weights in buffer than standard).  For use with 9mm bolts that do NOT have the central mass 'slug' -- such as the JP bolt JP Rifles 9mm Bolt  That's designed for use with both Colt and Glock pattern lowers.
• ALG Defense ACT (Advanced Combat Trigger) w/ purple spring installed -- ~4.8#.  Standard spring also included. This is one of the better triggers that QC10 recommends for their lowers
• AXTS Talon 45/90 ambi selector -- one large and one small lever.  Switchable from 45 to 90 degree throw
• Magpul K2 grip

Glock magazine in photo NOT included.

UPPER RECEIVER:  MUR-PISTOL-UPPER

The Quarter Circle 10 Pistol MUR is a highly rigid upper receiver designed specifically for pistol-caliber AR builds. Our upper receiver design is derived from the operator-quality VLTOR MUR receiver, and with the help of VLTOR engineers and our pistol caliber expertise, we’ve brought you the only possible choice for a dedicated pistol-caliber build.

The Pistol MUR is constructed to mil-spec standards, but adds a thicker receiver wall for increased rigidity and strength in blowback operation. This sturdier design contributes to increased accuracy and reliability, extends the life of interfacing components, and is a perfect aesthetic match to our lower receivers. These are slick-side uppers, reducing weight and complexity by doing away with the superfluous forward assist. Furthermore, the QC10 Pistol MUR has a redesigned ejection port engineered with wider pistol cartridge cases in mind.

Now, you can build your pistol-caliber platform with the peace of mind of knowing that every component is of the highest quality. Whether for home-defense, law enforcement, competition, or plinking, Quarter Circle 10 has you covered, with our philosophy of Made For- Not Modified. Each of our parts is engineered and manufactured with pistol calibers in mind, rather than modified from rifle-caliber components as an afterthought. We’re Quarter Circle 10, the AR Pistol-Caliber brand.

Not quite what you are looking for?  Let us know, we can usually accomodate special requests.  We can also do this in FDE -- FDE grip, FDE Maxim stock, and FDE Talon selector.