Polymer80 - PF45 Serialized Pistol Frame Kit

This item must ship to an FFL
Aero Precision Authorized Dealer

Polymer80 – PF45 Serialized Frame Kit

Serialized 80% Large Frame Pistol Frame Kit – G20SF / G21SF

Polymer80 – PF45 Serialized Frame Kit is everything you need to start your large frame size Glock® 10mm (G20SF), and .45 ACP (G21SF) build.  The Polymer80 – PF45 serialized frame kit includes the 80% large pistol frame, jig, and all tooling required to finish the frame using a drill press and XY cross-vise. Choose between Black, Flat Dark Earth, OD Green, Gray, and Cobalt or one of our custom cerakoted camo patterns.  Features like the extended beaver tail double undercut trigger guard, and a thumb ledge considerably enhances the ergonomics allowing for an effective grip and improved recoil mitigation.


  • The PF45 is compatible with components for 3-pin 10mm G20SF; 45 ACP G21SF.
  • Next Generation Ergonomics and Features
  • High-Strength Reinforced Polymer Construction
  • Picatinny/STANAG Compliant Accessory Rail
  • Serialization Plate w/ Serial Number
  • Stainless Steel Locking Block Rail System (LBRS)
  • Stainless Steel Drop-In Rear Rail Module (RRM)
  • Hardened Pins for LBRS and RRM
  • Complete Finishing Jig and 2 Drill bits Included.
  • Compatible with Gen 3 Glock® G20SF/G21SF slide assemblies
  • Compatible with Glock® G20SF/G21SF magazines

See the complete lineup of Polymer80 products.

Product Information


Black, Bronze Bottomland, Desert Canopy, FDE, Gold Dazzle, Grey, Multicam, Woodland Canopy, Woodland MultiCam, Black Multicam, Cobalt, OD Green




G20SF, G21SF, Gen 3




Before MAKING your purchase, please carefully review the information below.

Click Here for FFL Order Processing Lead Times

Review our FFL Ordering Instructions HERE before placing your order.

  • Prices do not include your dealer’s transfer fees.
  • Not eligible for return after transferred into your possession via ATF Form 4473.
  • There will be a 30% restocking fee on all controlled items returned because of failed background checks.

Federal law requires that you be 21 years of age or older to purchase a pistol, stripped receiver, or frame. If a frame or receiver can only be made into a long gun (rifle or shotgun), it is still a frame or receiver, not a handgun or long gun. However, they still are “firearms” by definition and subject to the same GCA limitations as any other firearms. See Section 921(a)(3)(b). 18 U.S.C. Section 922(b)(1) makes it unlawful for a licensee to sell any firearm other than a shotgun or rifle to any person under the age of 21.

No Sales to: MA

Arm or Ally

Arm or Ally is a stocking dealer for all Aero Precision, Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, TriggerTech, HIPERFIRE and named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!

See our growing inventory of AR Parts, and Reloading Components.