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Quarter Circle 10

Quarter Circle 10

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Quarter Circle 10 is a specialty weapons manufacturer and industry resource for Pistol Caliber Carbine products.

Quarter Circle 10 Complete Side Charging AR-15 9mm PCC Upper

$701.99 - $708.99

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Quarter Circle 10 Complete AR-15 9mm PCC Upper

$648.99 - $667.99

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Quarter Circle 10 Ranger AR 9MM Pistol - 5.5"
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4.8 star rating 30498 Reviews

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Verified Reviewer

0.0 star rating

04/28/25

Review by Anonymous User

On

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04/28/25

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Aleks A.
Verified Buyer

5.0 star rating

04/27/25

Lower

Review by Aleks A. on 27 Apr 2025 review stating Lower
Excellent quality and fast shipping

On Andro Corp Industries AC-9 9mm Complete Lower Receiver - No Stock

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04/27/25

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DAN L.
Verified Buyer

5.0 star rating

04/27/25

Excellent upgrade for stacatto cs

Review by DAN L. on 27 Apr 2025 review stating Excellent upgrade for stacatto cs
I bought this for my stacatto cs because the little tab at the end of the stacatto captured guide rod assembly is not round and when reassembling the pistol the part might turn just enough to keep it from going into battery. I have the dpm systems in most of my other guns no complaints. I like that they include additional springs for tunability.

On DPM Systems Technologies Mechanical Recoil Reduction System - Staccato CS 3.5″ Bull Barrel

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04/27/25

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William N.
Verified Buyer

5.0 star rating

04/27/25

Low felt recoil

Review by William N. on 27 Apr 2025 review stating Low felt recoil
Great pcc , but I wish you guys would have said it was the first gen model that doesn’t have threaded barrel.

On Nemo Arms Mongoose 9mm Carbine Pistol - 5.8"

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04/27/25

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Mark C.
Verified Buyer

5.0 star rating

04/27/25

Wanted the Picatinny without the

Review by Mark C. on 27 Apr 2025 review stating Wanted the Picatinny without the
Wanted the Picatinny without the weight, this was perfect

On Noveske NHR AR15 M-LOK Handguard

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04/27/25

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Kadir M.
Verified Buyer

5.0 star rating

04/26/25

F-1 handguard

Review by Kadir M. on 26 Apr 2025 review stating F-1 handguard
Fast shipping great service so pleased with my handguard

On F-1 Firearms AR-15 H7M Ultra Lite Handguard-16.3" (M-LOK)

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04/26/25

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Special Price $1,399.00 Regular Price $1,684.95

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Quarter Circle 10 Side Charging QC5 9MM PCC Builders Kit

5.0 star rating 2 Reviews

$664.99 - $671.99

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Quarter Circle 10 Complete AR-15 9mm PCC Upper - 7.5"

Special Price $667.99 Regular Price $889.95

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Quarter Circle 10 Complete AR-15 9mm PCC Upper - 5.5"

Special Price $648.99 Regular Price $864.95

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Quarter Circle 10 Side Charging Small Frame (Glock Compatible) 9MM Builders Kit

4.0 star rating 2 Reviews

$664.99 - $671.99

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