Caliber
5.56x45 mm NATO / .223 Rem
Barrel
14.5", 4150 CMV steel, Nitride finish
Rifling twist
1:8", 6 grooves, right-hand twist (RH)
Upper receiver
Forged 7075-T6 aluminium, CNC machined, M4 feed ramps
Lower receiver
Forged 7075-T6 aluminium, mil-spec, ambidextrous
Bolt
9310 steel, MPI and HPT tested
Bolt carrier
AISI 8620 steel, optional DLC coating
Gas system
Short-stroke piston (SSP), carbine-length
Gas block
Stepless, continuous adjustment
Trigger
Mil-spec two-stage or Geissele QMS
Handguard
SOG V-CUT Type I — 6061-T6 aluminium, M-LOK on 7 planes, 2 front Picatinny rails
Rail
Full-length Picatinny rail MIL-STD-1913
Muzzle device
SOG / A2, 1/2x28 TPI thread
Buffer system
H2 steel buffer, flat-wire spring, SOG buffer tube with carrier guide
Stock and grip
B5 Systems — stock, grip and foregrip
Ergonomics
Fully ambidextrous — bolt catch, mag release, charging handle, safety
QD points
4 QD points, replaceable carbon-steel inserts
Finish
Type III hard anodising or Cerakote in any colour
Included
SOG polymer magazine, folding polymer sights
Manufacturing standards
AQAP 2110:2016 · ISO 9001:2015
