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Quarter Circle 10 .40 S&W/10mm Auto Bolt Assembly QC-A-BLT-G-40

Quarter Circle 10 .40 S&W/10mm Auto Bolt Assembly, Black Nitride, QC-A-BLT-G-40
Quarter Circle 10 .40 S&W/10mm Auto Bolt Assembly, Black Nitride, QC-A-BLT-G-40
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Quarter Circle 10 .40 S&W/10mm Auto Bolt Assembly, Black Nitride, QC-A-BLT-G-40

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Questions & Answers
Customer Reviews
Most Recent Reviews
QC10 .40 BCG by J, Verified Owner, December 6, 2023
I only use QC10 when I want a premium PCC build. Their components are top notch and I've never been disappointed with their receivers or 9mm/.40 PCC parts.
Read 1 Review

Product No Longer Available

Unfortunately Quarter Circle 10 .40 S&W/10mm Auto Bolt Assembly is not listed by OpticsPlanet.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Parts, Bolt Carrier Groups yourself to try and find the perfect replacement for you!

Product Info for Quarter Circle 10 .40 S&W/10mm Auto Bolt Assembly

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.image

Features of Quarter Circle 10 .40 S&W/10mm Auto Bolt Assembly

  • Advanced blowback design
  • Manufactured to function reliably with any QC10 9mm platform
  • Manufactured to function reliably with Glock .40 S&W magazines
  • Drop-in Installation
  • 8620 Steel Bolt
  • QPQ Nitride treated for maximum durability and wear resistance
  • Heavy Duty Extractor
  • Removable mass

Package Contents:

  • Quarter Circle 10 .40 S&W/10mm Auto Bolt Assembly

Ammunition

1–49 / 49
Previous
Norma Range and Training .40 S&W 180 Grain Full Metal Jacket Brass Cased Pistol Ammo, 50 Rounds, 801407652
Norma Range and Training .40 S&W 180 Grain Full Metal Jacket Brass Cased Pistol Ammo, 50 Rounds, 801407652
List: $22.99 (Save $1.60)
$21.39
$0.43/Round
Remington UMC .40 S&W 165 Grain Full Metal Jacket Centerfire Pistol Ammunition
Remington UMC .40 S&W 165 Grain Full Metal Jacket Centerfire Pistol Ammunition
(1)
As Low As (Save Up to 28%)
$26.79
$0.54 - $0.67/Round
See all 2 models
Nosler ASP .40 S&W 150 Grain Jacketed Hollow Point Brass Cased Cased Pistol Ammunition
Nosler ASP .40 S&W 150 Grain Jacketed Hollow Point Brass Cased Cased Pistol Ammunition
(4)
As Low As (Save Up to 40%)
$17.29
$0.83 - $0.86/Round
See all 2 models
Norma Safeguard .40 S&W 165 Grain Jacketed Hollow Point Brass Cased Pistol Ammo, 50 Rounds, 801407887
Norma Safeguard .40 S&W 165 Grain Jacketed Hollow Point Brass Cased Pistol Ammo, 50 Rounds, 801407887
List: $42.99 (Save 17%)
$35.89
$0.72/Round
Best Rated
SinterFire Special Duty Self-Defense .40 S&W 125 Grain Hollow Point Frangible Brass Cased Pistol Ammunition
SinterFire Special Duty Self-Defense .40 S&W 125 Grain Hollow Point Frangible Brass Cased Pistol Ammunition
(8)
List: $18.99 (Save 31%)
$13.09
$0.65/Round
See all 1 models
Best Rated
Remington UMC .40 S&W 180 Grain Full Metal Jacket Centerfire Pistol Ammunition
Remington UMC .40 S&W 180 Grain Full Metal Jacket Centerfire Pistol Ammunition
(6)
As Low As (Save Up to 33%)
$24.99
$0.50 - $0.67/Round
See all 5 models
Best Rated
Liberty Ammunition Civil Defense .40 S&W 60 Grain Hollow Point Brass Cased Centerfire Pistol Ammunition
Liberty Ammunition Civil Defense .40 S&W 60 Grain Hollow Point Brass Cased Centerfire Pistol Ammunition
(10)
List: $40.99 (Save $2.40)
$38.59
$1.93/Round
See all 1 models
Cor Bon 40 S+W 140 Grain Jacketed Hollow Point -DPX Brass Cased Pistol Ammo, 20 Rounds, DPX40140/20
Cor Bon 40 S+W 140 Grain Jacketed Hollow Point -DPX Brass Cased Pistol Ammo, 20 Rounds, DPX40140/20
List: $27.99 (Save 26%)
$20.69
$1.03/Round
Federal Premium Champion Training 40 S&W 180 Grain Full Metal Jacket Brass Cased Brass Centerfire Pistol Ammunition
Federal Premium Champion Training 40 S&W 180 Grain Full Metal Jacket Brass Cased Brass Centerfire Pistol Ammunition
(1)
As Low As (Save 10%)
$32.29
$0.65/Round
See all 2 models
Remington UMC .40 S&W 180 Grain Jacketed Hollow Point Centerfire Pistol Ammunition
Remington UMC .40 S&W 180 Grain Jacketed Hollow Point Centerfire Pistol Ammunition
(2)
As Low As (Save Up to 11%)
$45.99
$0.92/Round
See all 2 models
Cor Bon 40 S&W 150 Grain Jacketed Hollow Point Brass Cased Pistol Ammo, 20 Rounds, SD40150/20
Cor Bon 40 S&W 150 Grain Jacketed Hollow Point Brass Cased Pistol Ammo, 20 Rounds, SD40150/20
(1)
List: $27.99 (Save 22%)
$21.79
$1.09/Round
Federal Premium American Eagle Indoor Range Training Lead-Free .40 S&W 120 Grain Lead-Free Ball Brass Cased Centerfire Pistol Ammunition
Federal Premium American Eagle Indoor Range Training Lead-Free .40 S&W 120 Grain Lead-Free Ball Brass Cased Centerfire Pistol Ammunition
(1)
List: $46.99 (Save 10%)
$42.39
$0.85/Round
See all 1 models
Federal Premium Personal Defense Hydra-Shok 40 S&W 165 Grain Jacketed Hollow Point Centerfire Pistol Ammo, 20 Rounds, P40HS3
Federal Premium Personal Defense Hydra-Shok 40 S&W 165 Grain Jacketed Hollow Point Centerfire Pistol Ammo, 20 Rounds, P40HS3
(1)
List: $37.99 (Save 21%)
$29.89
$1.49/Round
SinterFire Reduced Hazard .40 S&W 125 Grain Frangible Brass Cased Pistol Ammo, 50 Rounds, 856086004636
SinterFire Reduced Hazard .40 S&W 125 Grain Frangible Brass Cased Pistol Ammo, 50 Rounds, 856086004636
List: $45.99 (Save 37%)
$28.99
$0.58/Round
Super Vel Ammunition 40 S&W 125 grain Solid Copper Hollow Point Brass Cased Pistol Ammunition
Super Vel Ammunition 40 S&W 125 grain Solid Copper Hollow Point Brass Cased Pistol Ammunition
As Low As (Save Up to 18%)
$29.49
$1.19 - $1.47/Round
See all 2 models
Fiocchi Defense Dynamics .40S&W 180 Grain JHP Brass Cased Pistol Ammo, 50 Rounds, 40SWE
Fiocchi Defense Dynamics .40S&W 180 Grain JHP Brass Cased Pistol Ammo, 50 Rounds, 40SWE
(1)
List: $25.10 (Save $2.01)
$23.09
$0.46/Round
Federal Premium .40 S&W 180 Grain Jacketed Hollow Point Brass Centerfire Pistol Ammo, 50 Rounds, TP40VHP1
Federal Premium .40 S&W 180 Grain Jacketed Hollow Point Brass Centerfire Pistol Ammo, 50 Rounds, TP40VHP1
(1)
List: $49.99 (Save 22%)
$39.19
$0.78/Round
Super Vel Ammunition 40 S&W 180 grain Full Metal Jacket Brass Cased Pistol Ammunition
Super Vel Ammunition 40 S&W 180 grain Full Metal Jacket Brass Cased Pistol Ammunition
As Low As (Save Up to 36%)
$28.29
$0.47 - $0.57/Round
See all 2 models
Speer Gold Dot Personal Protection .40 S&W 165 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, 23970GD
Speer Gold Dot Personal Protection .40 S&W 165 Grain Hollow Point Centerfire Pistol Ammo, 20 Rounds, 23970GD
(1)
List: $42.99 (Save 22%)
$33.69
$1.68/Round
Fort Scott Munitions 40 S&W 125 Grain Centerfire Pistol Ammo, 20 Rounds, 400-125-SCV
Fort Scott Munitions 40 S&W 125 Grain Centerfire Pistol Ammo, 20 Rounds, 400-125-SCV
(1)
List: $29.98 (Save 15%)
$25.59
$1.28/Round
Speer Lawman Training .40 S&W 165 Grain Total Metal Jacket Centerfire Pistol Ammo, 50 Rounds, 53955
Speer Lawman Training .40 S&W 165 Grain Total Metal Jacket Centerfire Pistol Ammo, 50 Rounds, 53955
(1)
List: $36.99 (Save 21%)
$29.09
$0.58/Round
Federal Premium Syntech Range 40 S&W165 Grain Syntech Jacket Flat Nose Centerfire Pistol Ammo, 50 Rounds, AE40SJ1
Federal Premium Syntech Range 40 S&W165 Grain Syntech Jacket Flat Nose Centerfire Pistol Ammo, 50 Rounds, AE40SJ1
List: $38.99 (Save 33%)
$26.29
$0.53/Round
Hornady Custom .40 S&W 155 grain eXtreme Terminal Performance Brass Cased Centerfire Pistol Ammo, 20 Rounds, 9132
Hornady Custom .40 S&W 155 grain eXtreme Terminal Performance Brass Cased Centerfire Pistol Ammo, 20 Rounds, 9132
List: $36.61 (Save 36%)
$23.29
$1.16/Round
Magtech 40 S&W 180 Grain Jacketed Hollow Point Brass Cased Pistol Ammo, 50 Rounds, 40A
Magtech 40 S&W 180 Grain Jacketed Hollow Point Brass Cased Pistol Ammo, 50 Rounds, 40A
(1)
List: $24.85 (Save 18%)
$20.49
$0.41/Round
PMC Ammunition Bronze .40 S&W 165 Grain Jacketed Hollow Point Brass Cased Pistol Ammo, 50 Rounds, 40B
PMC Ammunition Bronze .40 S&W 165 Grain Jacketed Hollow Point Brass Cased Pistol Ammo, 50 Rounds, 40B
(2)
List: $52.49 (Save 49%)
$26.69
$0.53/Round
Lehigh Defense Xtreme Defense .40 S&W 115 Grain Fluid Transfer Monolithic Brass Cased Centerfire Pistol Ammo, 20 Rounds, LA40115XD
Lehigh Defense Xtreme Defense .40 S&W 115 Grain Fluid Transfer Monolithic Brass Cased Centerfire Pistol Ammo, 20 Rounds, LA40115XD
(1)
List: $40.50 (Save 12%)
$35.69
$1.78/Round
Speer Gold Dot .40 S&W 180 Grain G2 Centerfire Pistol Ammo, 20 Rounds, 23999
Speer Gold Dot .40 S&W 180 Grain G2 Centerfire Pistol Ammo, 20 Rounds, 23999
List: $43.99 (Save 22%)
$34.29
$1.71/Round
Cor Bon 40 S&W 165 Grain Jacketed Hollow Point Brass Cased Pistol Ammo, 20 Rounds, SD40165/20
Cor Bon 40 S&W 165 Grain Jacketed Hollow Point Brass Cased Pistol Ammo, 20 Rounds, SD40165/20
List: $24.80 (Save 14%)
$21.29
$1.06/Round
Barnes Tac-Xpd DefenseHandgun Cartridges, .40 S&W, TAC-XP, 140 Grain, 20 - Rounds, 21554
Barnes Tac-Xpd DefenseHandgun Cartridges, .40 S&W, TAC-XP, 140 Grain, 20 - Rounds, 21554
(3)
List: $34.99 (Save 28%)
$25.29
$1.26/Round
Hornady Subsonic .40 S&W 180 grain eXtreme Terminal Performance Brass Cased Centerfire Pistol Ammo, 20 Rounds, 91369
Hornady Subsonic .40 S&W 180 grain eXtreme Terminal Performance Brass Cased Centerfire Pistol Ammo, 20 Rounds, 91369
List: $36.72 (Save 33%)
$24.59
$1.23/Round
Best Rated
PMC Bronze Ammo .40 S&W 165 Grain Full Metal Jacket Brass Casing Centerfire Pistol Ammo, 50 Rounds, 40D
PMC Bronze Ammo .40 S&W 165 Grain Full Metal Jacket Brass Casing Centerfire Pistol Ammo, 50 Rounds, 40D
(6)
List: $28.99 (Save 31%)
$19.99
$0.40/Round
Hornady Critical Duty .40 S&W 175 grain FlexLock Brass Cased Centerfire Pistol Ammo, 20 Rounds, 91376
Hornady Critical Duty .40 S&W 175 grain FlexLock Brass Cased Centerfire Pistol Ammo, 20 Rounds, 91376
List: $45.31 (Save 21%)
$35.89
$1.79/Round
Federal Premium Brass Centerfire Ammo .40 S&W 180 Grain Full Metal Jacket Brass Centerfire Pistol Ammo, 100 Rounds, AE40R100
Federal Premium Brass Centerfire Ammo .40 S&W 180 Grain Full Metal Jacket Brass Centerfire Pistol Ammo, 100 Rounds, AE40R100
List: $74.99 (Save 11%)
$66.99
$0.67/Round
Speer Lawman RHT .40 S&W 125 Grain Frangible Brass Cased Centerfire Pistol Ammo, 50 Rounds, 53375
Speer Lawman RHT .40 S&W 125 Grain Frangible Brass Cased Centerfire Pistol Ammo, 50 Rounds, 53375
(1)
List: $56.99 (Save 10%)
$51.19
$1.02/Round
Federal Premium American Eagle 40 S&W 165 Grain Full Metal Jacket Brass Cased Centerfire Pistol Ammo, 50 Rounds, AE40R3
Federal Premium American Eagle 40 S&W 165 Grain Full Metal Jacket Brass Cased Centerfire Pistol Ammo, 50 Rounds, AE40R3
List: $36.99 (Save $3.50)
$33.49
$0.67/Round
Winchester .400 Legend Power PT 215 Grain Brass Case Centerfire Rifle Ammo, 20RD BX 200RD CASE, WINCX4001
Winchester .400 Legend Power PT 215 Grain Brass Case Centerfire Rifle Ammo, 20RD BX 200RD CASE, WINCX4001
List: $63.69 (Save 40%)
$38.29
$1.91/Round
BarnauL Polycoated Steel Case Rifle Ammo .40 S&W 165 gr FMJ 984 fps 500/ct Case, BRN 40SW FMJ165C
BarnauL Polycoated Steel Case Rifle Ammo .40 S&W 165 gr FMJ 984 fps 500/ct Case, BRN 40SW FMJ165C
List: $269.99 (Save 19%)
$217.49
$0.43/Round
Best Rated
Winchester USA Handgun .40 S&W 165 grain Full Metal Jacket (FMJ) Brass Casing Centerfire Pistol Ammunition
Winchester USA Handgun .40 S&W 165 grain Full Metal Jacket (FMJ) Brass Casing Centerfire Pistol Ammunition
(14)
As Low As (Save Up to 42%)
$38.29
$0.38/Round
See all 2 models
Cutting Edge Bullets Personal Home Defense 40 S&W 120 Grain Solid Copper Hollowpoint Brass Rifle Ammo, 20 Rounds, PHD 40SW 120
Cutting Edge Bullets Personal Home Defense 40 S&W 120 Grain Solid Copper Hollowpoint Brass Rifle Ammo, 20 Rounds, PHD 40SW 120
List: $59.99 (Save 17%)
$49.69
$2.48/Round
Freedom Munitions .40S&W 180 Grain RNFP Brass Pistol Ammunition
Freedom Munitions .40S&W 180 Grain RNFP Brass Pistol Ammunition
As Low As (Save 12%)
$20.29
$0.40 - $0.41/Round
See all 3 models
Best Rated
Nosler ASP .40 S&W 180 Grain Jacketed Hollow Point Brass Cased Cased Pistol Ammunition
Nosler ASP .40 S&W 180 Grain Jacketed Hollow Point Brass Cased Cased Pistol Ammunition
(5)
As Low As (Save Up to 47%)
$19.89
$0.83 - $0.99/Round
See all 2 models
Best Rated
Winchester USA Handgun .40 S&W 180 Grain Full Metal Jacket Brass Cased Centerfire Pistol Ammunition
Winchester USA Handgun .40 S&W 180 Grain Full Metal Jacket Brass Cased Centerfire Pistol Ammunition
(8)
As Low As (Save Up to 47%)
$19.19
$0.38 - $0.45/Round
See all 2 models
Federal Premium Syntech Defense 40 S&W 175 Grain Segmented Hollow Point Centerfire Pistol Ammunition
Federal Premium Syntech Defense 40 S&W 175 Grain Segmented Hollow Point Centerfire Pistol Ammunition
As Low As (Save Up to 11%)
$25.39
$1.07 - $1.27/Round
See all 2 models
Armscor Precision Inc USA .40 S&W 180 Grain Full Metal Jacket Brass Cased Pistol Ammunition
Armscor Precision Inc USA .40 S&W 180 Grain Full Metal Jacket Brass Cased Pistol Ammunition
As Low As (Save Up to 24%)
$21.99
$0.44/Round
See all 2 models
Freedom Munitions .40 S&W 165 Grain Round Nose Flat Point Brass Pistol Ammunition
Freedom Munitions .40 S&W 165 Grain Round Nose Flat Point Brass Pistol Ammunition
As Low As (Save 12%)
$20.09
$0.40/Round
See all 3 models
Freedom Munitions .40 S&W 165 Grain Hollow Point Brass Pistol Ammunition
Freedom Munitions .40 S&W 165 Grain Hollow Point Brass Pistol Ammunition
As Low As (Save 12%)
$19.79
$0.39 - $0.40/Round
See all 3 models
Best Rated
Winchester USA Handgun .40 S&W 165 grain Full Metal Jacket Brass Cased Centerfire Pistol Ammunition
Winchester USA Handgun .40 S&W 165 grain Full Metal Jacket Brass Cased Centerfire Pistol Ammunition
(6)
As Low As (Save Up to 48%)
$19.19
$0.38/Round
See all 2 models
Best Rated
CCI Ammunition Blazer, .40 S&W, 180 Grain, FMJ, Brass Case, Brass Centerfire Pistol Ammo, 50 Rounds, 5220
CCI Ammunition Blazer, .40 S&W, 180 Grain, FMJ, Brass Case, Brass Centerfire Pistol Ammo, 50 Rounds, 5220
(10)
List: $35.99 (Save 10%)
$32.29
$0.65/Round
Hornady Critical Defense .40 S&W 165 grain Flex Tip eXpanding Brass Cased Centerfire Pistol Ammo, 20 Rounds, 91340
Hornady Critical Defense .40 S&W 165 grain Flex Tip eXpanding Brass Cased Centerfire Pistol Ammo, 20 Rounds, 91340
(3)
List: $44.08 (Save 21%)
$34.99
$1.75/Round
Next

Ammo Boxes

1–14 / 14
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MTM P50 Fliptop Box Handgun .45 ACP/10mm/.40 S&W/.41 AE, Clear Green, P50-45-16
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RCBS Impact Resistant Ammo Box .44 Mag 7701E936, RC86917
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List: $9.00 (Save 28%)
$6.49
Berrys 16678 008 Ammo Box 40 S&W,45 ACP 100rd Clear Lid W/Black Bottom
Berrys 16678 008 Ammo Box 40 S&W,45 ACP 100rd Clear Lid W/Black Bottom
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$5.49
Berrys 67789 008 Ammo Box 40 S&W,45 ACP 100rd Blue Lid W/Black Bottom
Berrys 67789 008 Ammo Box 40 S&W,45 ACP 100rd Blue Lid W/Black Bottom
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MTM P-100 Fliptop Box .45 ACP/10mm/.40 S&W/.41 AE, Clear Green/Black, P-100-45-16T
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(6)
List: $9.36 (Save 41%)
$5.49
Berrys 67425 408 Ammo Box 40 S&W,45 ACP 50rd Clear Lid W/Black Bottom
Berrys 67425 408 Ammo Box 40 S&W,45 ACP 50rd Clear Lid W/Black Bottom
List: $5.97 (Save 47%)
$3.19
Berrys 13897 408 Ammo Box 40 S&W,45 ACP 50rd Smoke Lid W/Black Bottom
Berrys 13897 408 Ammo Box 40 S&W,45 ACP 50rd Smoke Lid W/Black Bottom
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BERRYS 40 CAL PLASTIC AMMO CAN, BLACK, 00330
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(1)
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BERRYS 91151 40 CAL PLASTIC AMMO CAN TAN
BERRYS 91151 40 CAL PLASTIC AMMO CAN TAN
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Berrys 92199 008 Ammo Box 40 S&W,45 ACP 100rd Smoke Lid W/Black Bottom
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(1)
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Plano Handgun Ammo Case with Hinged Cover, .43 ACP, 50 Count, Dark Gray/Transparent Rose, PMC122750
Plano Handgun Ammo Case with Hinged Cover, .43 ACP, 50 Count, Dark Gray/Transparent Rose, PMC122750
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List: $15.98 (Save 44%)
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MTM Ammo Box .45acp/.40sw/10mm 200-rounds, Green, P2004510
MTM Ammo Box .45acp/.40sw/10mm 200-rounds, Green, P2004510
List: $14.24 (Save 37%)
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Berry's Manufacturing Ammo Box #008 - .40/45 ACP/10mm Zombie Green & Black -100 rds, JF00600
Berry's Manufacturing Ammo Box #008 - .40/45 ACP/10mm Zombie Green & Black -100 rds, JF00600
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Quarter Circle 10 .40 S&W/10mm Auto Bolt Assembly Unavailable & Discontinued Models

List of Unorderable Models

  • Quarter Circle 10 .40 S&W/10mm Auto Bolt Assembly, Black Nitride, QC-A-BLT-G-40 , MPN: QC-A-BLT-G-40 , Code: 3KL-BCG-40SW10ABA-QC-A-BLT-G-40
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