The XO-26-S™ features an 11.5" barrel and comes in 5.56 NATO. The XO-26™ ships to 01/FFLs, and it is not an AOW. Consequently, no NFA paperwork is required! Each XO-26 ships with a copy of the ATF approval letter signed by the Chief of the ATF Firearms Technology Branch.
Barrel:
Chambered in 5.56 NATO
Salt Bath Nitride Chamber, Bore, & Finish
11.5” Barrel with 1/7-In. Twist in 5.56 NATO
Low Profile Gas Block and Carbine Length Gas System
Franklin Armory™ FST™ M-Lok Handguard MFT RSG Forward Vertical Grip
TRIUMVIR™ Flash Hider
Upper Receiver:
Franklin Armory® Salus™ Proprietary Billet Upper Receiver
Machined From 7075-T6 Aluminum
Hard Coat Type III Anodized
Full Picatinny Rail Forward Assist
Salt Bath Nitride Bolt Carrier Group
Lower Receiver:
Franklin Armory® Salus™ Propietary Billet Lower Receiver
Machined From 7075-T6 Aluminum
Hard Coat Type III Anodized
Flared Magazine Well for Quick Magazine Changes
Bilateral 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® BFSIII™ Trigger
MFT EPG16 Grip
smb4 Brace
Magazine:
Magpul Pmag P30 for 5.56 NATO
Reduced capacity magazine for Restricted States
Anti-Tilt Follower
Additional Features:
Comprehensive Safety Manual
Complimentary Lockable Case 
