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Quarter Circle 10 QC5 Side Charging Receiver Set Contact Email: Bolyepotter.devostores@zoho.com. No FFL Required .

Zhejiang Mengxuan Trade Co., Ltd

City: changzhou

Province/State:jiangsu

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Contact Person:MrBoyle potter View Contact Details

Quarter Circle 10 QC5 Side Charging Receiver Set Contact Email: Bolyepotter.devostores@zoho.com. No FFL Required .

Brand Name : Quarter Circle

Model Number : Quarter Circle 10 QC5

MOQ : 1 unit

Price : US $150

Payment Terms : T / T , Money Orders

Supply Ability : 3000 Units per week

Delivery Time : 2-10 Working days

Packaging Details : Gun case / Wooden case

Type : Receiver Set

model : Quarter Circle 10 QC5

Brand : Quarter Circle

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Product Description

  • Stripped receivers with proprietary parts
  • Accepts mil-spec buffer tubes
  • QC5 Rear Charging Upper Receiver
  • Does not include charging handle
  • Engineered for 9x19mm MP5 magazines
  • Recievers are milled billet 7075-T6 Aluminum
  • Type III Hard Coat Anodizing
  • No Lower Parts Kit installed
  • Made For the AR Platform- Not Modified

QC10's QC5 Receiver Set has been made from the ground up to accept MP5 style magazines. This set will work with most AR15 accessories that are not a proprietary part of it. The receivers are made from billet 7075 Aluminium making them very rugged. These receivers are the hard anodized for corrosion resistance and longevity. If you want one of the coolest rifles out there, this set is a great building block.

  • Builder's Kit includes the "bones"- the core components for building your own Quarter Circle 10 Carbine or Pistol

  • QC10 Stripped QC5 Lower Receiver with proprietary parts

  • QC10 Side Charging Upper Receiver

  • 9x19mm barrel in 5.5", 7.5", 10.5", or 16" length

  • G9 Bolt Assembly

  • QC10 Adjustable Buffer Kit

  • Made For the AR Platform- Not Modified



Build a 9mm PCC – Quarter Circle 10 Side Charging QC5 Builder’s Kit

QC10 PCC
QC10 PCC

U.S.A.-(Ammoland.com)- If you're a big fan of AR platform Pistol Caliber Carbines (PCC's), you've likely heard of Quarter Circle 10 before. If you're like me and have less experience with these diminutive lead-spitters, QC10 might be a bit of a new name in your mental Rolodex. To put it simply, QC10's intent is to position themselves as the one PCC-well you'll ever need to draw water from.

Quarter Circle 10 specializes only in AR pistol carbines, with chamberings in 9mm, .40SW and .45 ACP. They have lowers compatible with Glock, Colt, Sig, and Mp5 mags. There are other options as well (side charging versus rear charging, skeletonized receivers) but the bottom line is you won't find any rifle caliber specific parts here.

Quarter Circle 10 Side Charging QC-5 Builder's Kit

QC10 sent me a “QC-5 builder's kit” with an MP5 mag-compatible lower, side-charging upper, 5.5″ 9mm barrel, G9 bolt assembly and adjustable-weight buffer. Knowing how few and far between short AR handguards are, QC10 even offers M-LOK and Keymod handguards as short as 4.44″, and was kind enough to include one for the article.

That leaves the trigger assembly, takedown pins, grip and receiver extension. I used a Geissele Super 3 Gun (S3G) trigger, SB Tactical PDW brace, Mission First Tactical pistol grip and a few assorted extras to finish the parts list. Side note: the Geissele S3G wasn't on the "approved trigger" list by QC10, which meant it was a known risk going in. It ended up having reset issues and was swapped for an ALG Defense ACT trigger.
QC10 build kit, minus buffer assembly and extra weights.

Assembly of the QC10 kit is pretty painless. Starting with the lower receiver, we see it comes with the mag release and bolt stop already installed. Quite conveniently, the bolt stop is held in place by a threaded pin, not a hammered-in roll pin. If you want to swap in an oversized paddle, the time and effort needed is dropped significantly.

QC10 PCC
QC10's PCC bolt stop is held in place by a threaded pin, not a hammered-in roll pin.

That leaves the trigger assembly, takedown pins, grip and receiver extension. I used a Geissele Super 3 Gun (S3G) trigger, SB Tactical PDW brace, Mission First Tactical Engage pistol grip and a few assorted extras to finish the parts list. Side note: the Geissele S3G wasn't on the “approved trigger” list by QC10, which means it was a known risk going in. It ended up having reset issues and was swapped for an ALG Defense ACT trigger.

Installing the front takedown pin can be a little frustrating for those who aren't dexterous. I like to use a flathead screwdriver to hold the detent pin in place until the takedown pin can slide over it. This reduces my pin-launching events by about 99%.

QC10 PCC
I like to use a flathead screwdriver to hold the detent pin in place until the takedown pin can slide over it. This reduces my pin-launching events by about 99%.
QC10 PCC
The rear takedown pin is much easier, and its related spring is held in place by tightening down the receiver extension of the SB PDW brace.

The trigger assembly and grip are pretty “drop-in”, especially with the use of Geissele's trigger and hammer pin placeholders. These shortened pins hold their respective assemblies together and align until you slide the permanent pins in through the receiver holes. The grip is held by a single screw, while also holding in place the safety selector, detent pin and spring. Finished, the lower looks great! We still have the buffer spring and weight to cover in an upcoming section.

QC10 PCC
Finished, minus putting the bolt catch back in. Was waiting for an oversized one, ended up using the stock one.

The upper receiver of the QC-5 is even easier to put together. While I used a receiver block, the QC-5's unique interior geometry meant that I couldn't use the block's pins to hold the receiver in place. Just a small precaution: hold onto it when torquing! There is no gas block, gas tube or ejection port door to be concerned with on the QC-5. Simply place the barrel into the upper, apply a little dab of Loctite to the barrel nut threads and torque it down. I usually go to around 40 foot-pounds.

QC10 PCC
The upper receiver of the QC-5 is even easier to put together.

The handguard supplied by QC10 has an anti-rotation horseshoe, that indexes on the (non-present) gas tube. I still installed it to prevent an unsightly gap. I slid the handguard onto the barrel nut, aligned the top rails and used the pair of clamps (with Loctite) to affix the handguard to the nut.

QC10 PCC
The handguard supplied by QC10 has an anti-rotation horseshoe, that indexes on the (non-present) gas tube.

When it came time to choose a muzzle device, I had to go with my favorite. Flash suppressor? Muzzle brake? Nope, a suppressor. Call it a silencer, can, sonic reducer or whatever you please: just don't catch me at the range without one. Since I picked up my first in 2005, I keep my guns quiet whenever possible.

Installing a fixed-barrel spacer into my AAC Ti-Rant 45 (with 9mm adapter piston) took only seconds, and means I won't risk damage to the suppressor, which is OEM set up for a tilting barrel handgun (Glock, 1911 etc.). Slide the modified bolt assembly into the receiver (no charging handle here with a side-charger), and make sure to depress the little proprietary catch at the back of the upper when assembling with the lower.

QC10 PCC
Slide the modified bolt assembly into the receiver (no charging handle here with a side-charger), and make sure to depress the little proprietary catch at the back of the upper when assembling with the lower.

Finally, let's cover the adjustable-weight recoil buffer. It comes with 4 tungsten weights (and pads) installed, as well as 4 steel and 4 aluminum weights as extras. An allen-head screw/pin holds the blue rubber shock pad in place, which in turn holds the weights and pads inside the buffer. QC10's handy included chart indicated that a suppressed 9mm should have 8-11 oz of weight in the buffer. To get there, they recommend using all 4 of the steel weights, which brought it just barely to 8 oz. I changed out one steel for a heavier tungsten weight, as I'm going to be testing this PCC with some hot ammo. This brought the buffer up to ~9 oz. Standard carbine spring to go with the buffer and into the receiver extension, and the gun is done.

QC10 PCC
It comes with 4 tungsten weights (and pads) installed, as well as 4 steel and 4 aluminum weights as extras.

The QC-5 comes in a 5 lbs 9.1 oz, not counting the suppressor or optic. A good chunk of that (18.1 oz) is tied up in the SB PDW brace, but the gun balances very well. Someone wanting a lighter overall package could certainly pick a different brace.

QC10 PCC
The QC-5 comes in a 5 lbs 9.1 oz, not counting the suppressor or optic.

I topped off the PCC with a Vortex AMG UH-1 (as well as the AAC Ti-Rant), and will also bring a Nikon low power variable optic out to the range to see how this think performs! I have a good bundle of ammo on-hand, so stay tuned for a range day update. So far, this is looking like an interesting (and more modern) MP-5 alternative. Price on this builders kit (both receivers, barrel, bolt assembly, buffer assembly) is $949.95.

Color:
Black Anodized
Code:

3KL-UPR-SCUR-QC-PSCU-S

MPN:QC-PSCU-S
UPC:2797854

Important notice

  • Notice--Pay Pal.
    This item may not be purchased by using the Pay Pal method of payment.
  • Notice--Bulk Item Packaging.
    Please note that this item ships in its own packaging, so the contents may be identified.
  • Notice-Firearms.
    Firearms are shipped only to stores and are sold only as equipped. Not all firearms are available in all locations. Check all federal, state, and local laws and restrictions before ordering any firearm. Purchaser must comply with all applicable laws for pickup.

All firearm purchases require valid US government issued ID and related firearm paperwork. You must pass a criminal background check for all firearm purchases. Age and residency restrictions apply. You must meet all other requirements as set forth by applicable Federal, state and local statutes, rules and regulations for firearm purchase. Other terms and conditions may apply. Academy Sports + Outdoors reserves the right to refuse the sale of firearms to anyone for any reason. It is your responsibility to ensure that you are in compliance with all applicable laws, rules and regulations for the purchase of firearms. Please note a 10% restocking fee will be charged if your item is not picked up. A fee would not apply if your item is incorrect, damaged, or a failed background check occurs.

Any orders containing lower receivers require a verified FFL dealer to make the transfer.

Lower receivers will not be shipped until QC10 has your dealer's license on file.

Please contact your desired dealer about sending us a copy of their license.


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China Quarter Circle 10 QC5 Side Charging Receiver Set Contact Email: Bolyepotter.devostores@zoho.com. No FFL Required . wholesale

Quarter Circle 10 QC5 Side Charging Receiver Set Contact Email: Bolyepotter.devostores@zoho.com. No FFL Required . Images

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