General Information
For ALL Apex Handguard Systems
All Apex Handguard Systems come with a tube, clamp, and hardware.
TOP & ACCESSORY RAILS SOLD SEPARATELY
All materials USA made: Tube-6061 Aluminium, Clamp-7075 Aluminium, Rails-6061 Aluminium, Hardware-Steel
The OAL (Overall Length) includes the exposed portion of the clamp. Ex 12.5" = 11.5" tube + 1.0" exposed clamp.
Outside diameter of the tube is 1.970"
Inside diameter of the tube is 1.750":
AR15 models: .925'' above & .825'' below center of bore
308/AR10 models: .975'' above & .775'' below center of bore
The width of the slots for accessory rail placement is 7mm or .276"
The handguard is offset from the centerline of the barrel, to provide better internal clearance for the gas tube: AR15 by .050; 308 by .100
Compatible Gas Piston Systems: ONLY Osprey Gas Piston System. The Adams Arms Gas Piston System is NOT compatible.
Compatible Low Profile Gas Blocks (direct impingement)
Apex Item# 4625 Item# 4875 Item# 4938
Badger
Brownells
Daniel Defense
Midwest
GB Systems
PRI
STAG
Troy
VLTOR
Yankee Hill
or any front sight post that has been cut down
Vertical Grip Slot-accessory mounting slots, located on the bottom of the tube, provide the versatility for a wide range of positions.
Four (4) quick detach sling sockets, located at front, back, and the right and left. Any 3/8" QD will work. Contact VLTOR or Blue Force Gear for quick detach sling swivel.
10-24 set screws may be purchased from a hardware store to fill unused top holes, if desired.
Clamp Screws: 10-24 x 1/2" SHCS
Tube Screws: 10-24 x 1/4" BHS
Tube allows for installation for a 1.5" supressor tube
Cutout width on Extended Models: 7/8" Item# 2150 & Item# 2250
Cutout length of Extended Models: 1.405" Item# 2150 & Item# 2250
We don't recommend trim rings or end caps because of reduced ventilation, debris evacuation, and diminished barrel cooling.