QUARTER CIRCLE 10

Quarter Circle 10 is a family and female-owned company dedicated to producing high quality firearms.
Current AR-15 style pistol, rifle, and parts manufacturer located in Tucson, AZ, with headquarters in Dripping Springs, TX.
QUARTER CIRCLE 10 logo

QUARTER CIRCLE 10 AR-15s Models

QC5 9MM AR PCC SIDE-CHARGING/REAR-CHARGING Image

QC5 9MM AR PCC SIDE-CHARGING/REAR-CHARGING

9mm Para. cal., 5 1/2, 7 1/2, or 10 1/2 in. barrel, MP5 mag., Mil-Spec parts, SB Tactical A3 or PDW brace, milled billet aluminum rear or side-charging upper and lower receiver, Picatinny rail, M-LOK (side-charging) or KeyMod (rear-charging...

QC5 9MM RIFLE Image

QC5 9MM RIFLE

9mm Para. cal., 16 in. barrel, 30 shot MP5 mag., Mil-Spec lower parts, Magpul MOE collapsible stock, QC10 milled billet aluminum rear or non-reciprocating side-charging upper and lower receiver, Picatinny rail, M-LOK handguard, Type III har...

Big Tex (GLF) Image

Big Tex (GLF)

.45 ACP cal., 5 1/2, 7 1/2, or 10 1/2 in. barrel, double stack Glock mag. compatible, Mil-Spec parts, SB Tactical A3 or PDW brace, QC10 milled billet aluminum rear or side-charging (non-reciprocating) upper and lower receiver, Picatinny rai...

Big Tex (GLF) Image

Big Tex (GLF)

.45 ACP cal., 16 in. barrel, Glock 21 mag., Mil-Spec lower parts, Magpul MOE collapsible stock, QC10 milled billet aluminum rear or non-reciprocating side-charging upper and lower receiver, Picatinny rail, M-LOK handguard, Type III hardcoat...

Blu Whistler (P320) Image

Blu Whistler (P320)

9mm Para. cal., 5 1/2, 7 1/2, or 10 1/2 in. barrel, P320 mag. compatible, Mil-Spec parts, SB Tactical A3 or PDW brace, milled billet aluminum rear or side-charging upper and lower receiver, Picatinny rail, M-LOK handguard, DOJ cable lock a...

Ranger (GSF) Image

Ranger (GSF)

.40 S&W or 9mm Para. cal., 16 in. barrel, 33 shot Glock mag., Mil-Spec lower parts, enhanced Mil-Spec trigger, Magpul MOE grip stock, ambi safety selector, QC10 milled billet aluminum rear or non-reciprocating side-charging upper and lower...

Ranger (GSF) Image

Ranger (GSF)

9mm Para. or .40 S&W cal., 5 1/2, 7 1/2, or 10 1/2 in. contour barrel, Glock compatible mag., enhanced Mil-Spec trigger, SB Tactical A3 (side-charging) or PDW brace, Magpul MOE (rear-charging) or Reptilia (side-charging) grip, ambi safety s...

Rider (CLT) Image

Rider (CLT)

.45 ACP cal., 16 in. barrel, Colt SMG mag., Mil-Spec lower parts, Mil-Spec or Hiperfire Hipertouch Competition trigger, Magpul MOE collapsible stock, QC10 milled billet aluminum rear or non-reciprocating side-charging upper and lower receiv...

Rider (CLT) Image

Rider (CLT)

9mm Para. cal., 5 1/2, 7 1/2, or 10 1/2 in. barrel, Colt SMG mag., Mil-Spec parts, SB Tactical A3 or PDW brace, milled billet aluminum rear or side-charging upper and lower receiver, Picatinny rail, M-LOK handguard, DOJ cable lock and carry...

QC5 YKMF-5 Image

QC5 YKMF-5

9mm Para. cal., blowback operation, 5 1/2 in. barrel, Dead Air Silencer Micro Brake, MP5 mag., SB Tactical PDW brace, Phase 5 ambi selector switch, 4 1/4 in. Bowden Tactical handguard, milled billet side-charging upper and lower receiver, P...

QC10 MINI MAYHEM Image

QC10 MINI MAYHEM

9mm Para. cal., 5 1/2 in. barrel, 33 shot double stack Glock mag., enhanced Mil-Spec trigger, SB Tactical SBA3 brace, Magpul MOE grip, Radian Talon ambi safety selector, non-reciprocating adj. buffer system, Law Tactical bolt assembly, LRBH...