QC10 YKMF-5 9mm AR Side Charging Pistol- NEW 2022!

Availability: In stock

New for 2022!

A special full build offered by QC10 focused on bringing the tried-and-true technology of the MP5 platform and the quality of QC10’s manufacturing process. The YKMF-5 comes as a complete blowback AR pistol and is equipped with a 5.5" QC10 barrel, Bowden Tactical handguard, Dead Air Muzzle Brake, SB Tactical PDW brace and Phase 5 ambi controls. What sets the YKMF-5 apart is that it is manufactured from the ground up focused on the MP5 9x19mm magazine, features QC10’s adjustable buffer system, includes high quality parts from trusted partners, and specific attention to detail on the design and aesthetics. Avoid potential headaches from mixing other brands, knowing the YKMF-5 has been thoroughly tested and is supported fully by QC10’s lifetime warranty and recognized customer support.

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.


Units are being distributed to our dealer network. Want to get one now? Try these dealers first!

The Hub-Tucson

The Hub- Lakeside

The Hub- Phoenix

Rainier Arms- Online

Rainier Arms- Wichita



Shipping & Returns

Shipping: All orders are shipped within 72 hours Monday -Thursday 6am - 4pm Arizona Time.

Any order containing a lower receiver will not be shipped until we receive a copy of your FFL. Once received regular shipping policies apply. Submit your FFL Here.

Returns: Quarter Circle 10 offers a 30 day return, refund and exchange policy. See Details.

  • Engineered for 9x19mm MP5 Magazines- QC10 has a solid and reliable supply of metal KCI magazines.
  • Milled Billet 7075-T6 Lower Receiver and Side Charging Upper Receiver
  • Type III Hard Coat Anodizing
  • Bowden Tactical 4.25” Handguard
  • QC10 5.5” 9mm Barrel
  • SB Tactical PDW Brace
  • Dead Air Silencers Micro Brake
  • Phase 5 Ambi Selector Switch
  • Patriot Hard Carry Case
  • Lifetime Warranty
  • Made For not Modified


21 3/8" fully collapsed

23 7/8" fully extended

Weight: 5.14 lbs


* Side Charging Upper GIBBZ Arms Pat. No. 9,310,146