Current AR-15 style pistol, rifle, and parts manufacturer located in Tucson, AZ, with headquarters in Dripping Springs, TX.
Quarter Circle 10 is a family and female-owned company dedicated to producing high quality firearms.
QUARTER CIRCLE 10 Models
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) handguard, DOJ cable lock and carrying case, Type III hardcoat black anodized finish.
.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 rail, M-LOK handguard, DOJ cable lock and carrying case, Type III hardcoat black anodized finish.
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 selector, milled billet aluminum rear or side-charging upper and lower receiver, QC 10 Helix M-LOK handguard, LRBHO, Type III hardcoat black anodized finish.
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 carrying case, Type III hardcoat black anodized finish.
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 and carrying case, Type III hardcoat black anodized finish.
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, Patriot hard case, Type III hardcoat anodized black finish, 5.14 lbs. New 2022.
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, LRBHO, Radian Raptor ambi charging handle, carry case and DOJ cable lock, Type III hardcoat black anodized finish.
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 hardcoat anodized black finish.
.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 black anodized finish.
.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 receiver, Picatinny rail, LRBHO, QC10 Helix M-LOK handguard, Type III hardcoat black anodized finish.
.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 receiver, Picatinny rail, M-LOK handguard, includes carry case and cable lock, Type III hardcoat black anodized finish.