• Sale
  • $1,814.99

Buying a complete firearm or lower from Franklin Armory is easy, safe and legal. Federal law requires all firearms be shipped to a licensed dealer.

During the checkout process, enter the name and contact information for your FFL in the special instructions field. Please be sure to have made prior arrangements with your FFL, to include having your FFL contact us with all of their proper documentation for verification of their license.

Chambered in 5.56 NATO or 450 Bushmaster
Salt Bath Nitride Chamber, Bore, & Finish
16” M4 Contour Barrel
Threaded Muzzle Crown
TRIUMVIR™ Hider Pinned & Welded
1/7-Inch Twist 1/24-Inch Twist in 450 BM
Low Profile Gas Block
Carbine Length Gas System
FSR 15” Rail System


Upper Receiver:
Franklin Armory™ Libertas™ Proprietary Billet Upper Receiver
Machined From 7075-T6 Aluminum
Hard Coat Type III Anodized 
Full Picatinny Rail
MBUS Front & Rear Sights
Forward Assist
Salt Bath Nitride Bolt Carrier Group


Lower Receiver:
Franklin Armory® Libertas™ Proprietary Billet Lower Receiver
Machined From 7075-T6 Aluminum
Hard Coat Type III Anodized
Flared Magazine Well for Quick Magazine Changes
Ambidextrous Push Button QD Sling Mounts
Integral Cold Weather Trigger Guard
Serrated Memory Index Point for Shooting Finger
Textured Front Area for Offhand Grip
Specialized Tension Screw - Eliminates Upper/Lower Play
Franklin Armory™ Factory Custom Tuned Trigger
Ergo Ambi Sure Grip


Magpul Gen 3 Pmag P30 for 5.56 NATO
450 BM uses 10 Round Stainless Steel Magazines
10/30 or 15/30 Magazine for Restricted States
Anti-Tilt Follower


Magpul CTR Stock
Snag Free Design
Friction Lock Included
Reversible Push Button QD Sling Mounts


Additional Features:
Comprehensive Safety Manual
California Certified Cable Lock
Complimentary Lockable Case