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Franklin Armory Praefector-M 20 inch Militia Model Billet Upper Assembly 00-40020-BLK

Franklin Armory Praefector-M 20 inch Militia Model 7.62x51/308 Winchester Complete Upper, Black 4137-BLK
Franklin Armory Praefector-M 20 inch Militia Model 7.62x51/308 Winchester Complete Upper, Black 4137-BLK
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Franklin Armory Praefector-M 20 inch Militia Model 7.62x51/308 Winchester Complete Upper, Black 4137-BLK

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Questions & Answers
What lower will work with this upper, any A-10 lower, or is it made different than all the other 308 rifles in the world Expert Answer

This upper would fit any Gen 1 DPMS/LR308 lower.

by Kurt Colbourne, Gear Expert, October 28, 2021
Will this fit a ar 15 lower? Expert Answer

No, it will not.

by Kurt Colbourne, Gear Expert, October 28, 2021
View All Q&A You Have a Question? Ask!

Product Discontinued by Manufacturer

Franklin Armory Praefector-M 20 inch Militia Model Billet Upper Assembly has been discontinued by Franklin Armory and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Receivers yourself to try and find the perfect replacement for you!

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for Franklin Armory Praefector-M 20 inch Militia Model Billet Upper Assembly

The Militia Model complete upper assembly features a 20 inch barrel chambered in 308 WIN, Triumvir flash hider, Franklin Armory Militia Model FSR 14 inch Handguard, and the Franklin Armory Militia Model inch proprietary billet upper receiver. Chambered in 7.62x51 NATO/308 Winchester. 20 inch Barrel with Midlength Gas System. Triumvir Muzzle Device. Midlength Gas System. 1/10-Inch Twist. Salt Bath Nitride Chamber, Bore, and Finish. 4140 Chrome Moly Steel Construction. Direct Impingement Gas System. Franklin Armory Militia Model FSR 14 inch Handguard. Franklin Armory Militia Model Proprietary Billet Upper Receiver. Machined From 7075-T6 Aluminum. Hard Coat Type III Anodized Black. Full Picatinny Rail. Forward Assist. Salt bath Nitride Bolt Carrier Group. MAGPUL MBUS Front and Rear Sights.image

Package Contents:

  • Franklin Armory Praefector-M 20 inch Militia Model Billet Upper Assembly

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Franklin Armory Praefector-M 20 inch Militia Model Billet Upper Assembly Unavailable & Discontinued Models

List of Unorderable Models

  • Franklin Armory Praefector-M 20 inch Militia Model 7.62x51/308 Winchester Complete Upper, Black, 00-40020-BLK , MPN: 00-40020-BLK , Code: 2G2-URC-FAPM20BUA-00-40020-BLK
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Last updated 2026-07-10 UTC.