Hi Michael, It has the Free float rail system ---This AR-15 semi automatic rifle from LWRC features a cold hammer forged spiral fluted barrel that dissipates heat better than conventional barrels, as well as reduces the overall weight of the rifle. The rifle is direct impingement gas operated, and equipped with ambidextrous control and an ambidextrous charging handle. Just add your sights or optic of choice and you're ready to go for duty, competition, varmint hunting or home defense.
Specifications and Features:
LWRC ICDIR5B18
5.56 NATO (accepts .223 Remington)
Direct gas impingement semi automatic
16.1" cold hammer forged spiral fluted barrel
1:7" twist
30 rounds capacity
>>>>>Free float rail system

Yes,this rifle Features a LWRCI Modular One-Piece Free-Float Rail with a "Mid-Range" Gas Block. The Gas Block looks to be in the standard location but, "LWRC Product Information" can accurately answer this part at Phone: 410-901-1348
Monday - Friday: 8:00am - 5:00 pm

Modular free float rail system CALIBER 5.56 NATO
BARREL 16.1” [40.9cm]
WEIGHT 6.6lbs [2.9kg]
O/A LENGTH 32"-35.25" [81.3-89.5cm]
MUZZLE THREADS 1/2 x 28 TPI
RIFLING 1:7" RH

Step Up Attributes

LWRCI™ Modular, One-Piece, Free-Float Rail
LWRCI™ Rail Panels and Hand Stop
LWRCI™ Angled Ergonomic Fore Grip w/ QD sling point
NiCorr-treated LWRCI™ DI Gas Block and Gas Tube
LWRCI™ Cold-Hammer-Forged, NiCorr-treated ,Spiral-Fluted Barrel
LWRCI™ A2 Flash Hider
Type III Hard-Coat Anodize on Receivers and Rails
Magpul MOE+ Grip and Magpul PMAG
LWRCI Monoforge™ Upper Receiver
LWRCI™ Advanced Trigger Guard
Fully Ambidextrous Lower Controls: Mag Release, Bolt Catch & Release, and Selector
Mil-Spec, 6-Position Buffer Tube
H2 Buffer and Mil-Spec Buffer Spring
LWRCI™ Compact Stock w/ QD sling
LWRCI™ Ambidextrous Charging Handle

Here is some more info CALIBER 5.56 NATO
BARREL 16.1 [40.9cm] ---
WEIGHT 6.6lbs [2.9kg] ---
O/A LENGTH 32-35.25 [81.3-89.5cm] ---
MUZZLE THREADS 1/2 x 28 TPI ---
RIFLING 1:7 RH ---
Features:
LWRCI Modular One-Piece Free-Float Rail ---
LWRCI Rail Panels and Hand Stop ---
LWRCI Angled Ergonomic Fore Grip w/ QD sling point ---
NiCorr-treated LWRCI DI Gas Block and Gas Tube ---
LWRCI Cold-Hammer-Forged NiCorr-treated Spiral-Fluted Barrel ---
LWRCI A2 Flash Hider ---
Type III Hard-Coat Anodize on Receivers and Rails ---
Magpul MOE+ Grip and Magpul PMAG ---
LWRCI Monoforge Upper Receiver ---
LWRCI Advanced Trigger Guard ---
Fully Ambidextrous Lower Controls: Mag Release Bolt Catch & Release and Selector ---
Mil-Spec 6-Position Buffer Tube ---
H2 Buffer and Mil-Spec Buffer Spring ---
LWRCI Compact Stock w/ QD sling ---
LWRCI Ambidextrous Charging Handle