FOR CHRISTMAS/NEW YEAR DEALS ONLY - SALE ENDS JAN 3 2020
- Free Threaded Barrel Upgrade
- Free Upgraded Gen4 Ejector
- Free Shipping on Selected Build Kits
Our MDX Arms build kit includes everything you need except magazines. This kit is an 80% frame and can be shipped directly to you; without the need for an FFL transfer.
MDX Arms Build Kit Contents:
- Polymear80 80% Frame Kit with Jig and tooling - PF940SC (metal rails, newest version)
- Glock OEM Polymer Sights
- Glock OEM Guiderod
- Glock OEM Lower Parts Kit (LPK)
- Shadow System Slide Parts Kit (SPK)
- Match Grade Drop-In Barrel
- MDX Arms US Made CNC 416R Slide
*All Build Kits comes un-assembled. If you wish for us to install sights/channel liner, make sure to add a Note/Comment on our checkout page.
Details About PF940SC 80% Frame:
- Enhanced Ergonomics and Features
- High-Strength Reinforced Polymer Construction
- Aggressive and Adaptable Grip Texture
- Picatinny/STANAG Compliant Accessory Rail
- Blank Serialization Plate
- Stainless Steel Locking Block Rail System (LBRS™)
- Stainless Steel Rear Rail Module (RRM™)
- Hardened Pins for LBRS ™ and RRM™
- Complete Finishing Jig, Drill bits and End Mill Included
- Compatible with Glock® 26/27 Gen3 Components
- Slide Lock Spring
- Patent Available
Details About OEM LPK:
- Locking Block Pin
- Trigger Pin
- Magazine Catch
- Magazine Catch Spring
- Slide Stop Lever
- Slide Lock
- Trigger Spring
- Trigger Housing with Ejector
- Trigger with Trigger Bar
- 5.5lbs Connector
Details About SPK by Shadow System:
- Machined 17-4 stainless steel firing pin, standard weight and length
- Standard OEM specification extractor
- Firing Pin Spring, standard weight
- Firing Pin Spacer Sleeve
- 2 Spring Cups
- Machined 17-4 stainless steel extractor depressor plunger assembly
- Cover Plate
- Machined 17-4 stainless steel firing pin safety
- Firing Pin Safety Spring
- Channel Liner
Details About the Barrels:
- Available only RAW Stainless Steel (SS) Flush Crown Cut
- SS are 416R Stainless Steel 9mm with 1:16 Twist.
- SAAMI Spec 9mm Chamber
- Glock Gen. 1-4 Compatible
- Made in the USA
*Our G27 Barrels are cut down G23 SS barrels. This is why you will see the original G23 Caliber Markings on the Top of the barrel lug.
*Barrel might require some fitting.
Details About the Slides:
- Machined from USA Grade 416R Stainless Steel Stock
- Front Serration
- Compatible with Glock Gen 1-3 OEM
- Cerakote Finish - Available in Black/Burnt Bronze/FDE/Tungsten Gray
- Made in USA
Ejector Upgrades: Upgrade Your #336 Ejector with #30274 Gen.4 Ejector for better ejection pattern. No more brass in the face!
Check our How To Video Section for guide and tricks about your build:
MDX Arms does not sell firearms. This is not a firearm and will ship directly to you without FFL needed
We do not ship 80% to New Jersey
Please refer to your state and federal laws about 80% kits. It's your responsibility to know your own laws.
We're not responsible for any improper milling, installation of parts, damage or any injury that might occur. Make sure to use proper safety equipment during your build
“GLOCK” is a federally registered trademark of Glock, Inc. and is one of many trademarks owned by Glock, Inc. or Glock Ges.m.b.H. MDX Arms is not affiliated with nor endorsed by Glock, Inc. or Glock Ges.m.b.H.
3 Reviews Hide Reviews Show Reviews
Yea I wish I would’ve got the item I ordered but they’ve been helpful
Customer service was great in working with us. Product is of excellent quality and performs exactly as expected.
I read complaints about the G27 having slide issues. FYI:
Its the front and rear drop in rails mainly the front! They both need material shaved off. Thats it! Other then that sweet build wish it had came with a mag other then that good customer service guys thx mdx. Hope the info helps out.