The F-1 Firearms C7K Contoured .308 Handguard is much the same as our standard C7K Contoured Handguard only slightly larger to accommodate the larger calibers associated with the AR10 and the .308 WIN and 6.5 Creedmoor calibers that it often carries.
- Manufactured from 7075-T6 Aluminum
- 1.65" Inside Diameter
- Contoured Grip Area to Promote Grip Repeatability and Comfort
- 1 Piece Free Float Design
- Aluminum Barrel Nut and Mounting Hardware Included
- Anti-Rotation Mounting System
- Full Length Picatinny Rails
- Type III Class 2 Hard Coat Anodized Finish
- Scalloped Top Rail
- Keymod Side and Bottom Rail Mounts
- F-1 Firearms 100% product guarantee
- Weight w/ barrel nut-14.9oz
Customer Reviews (2)
- Does not fit some .308 barrelsReview by Glenn
- Great Handguard. Totally The Right Stuff.Review by Abs
The guard is a really nice looking piece, well finished, anodizing is perfect, and the quality of the machining and deburring is perfect. It looks even better in person than the photos. Despite out skeletonized it is, it is really sturdy and still has good weight to it, without being heavy.
The picatinny rail was flawless, and matched the height of my F-1 Firearms receiver perfectly. It was perfectly flat from receiver through guard when checked with a straight-edge.
Regarding sizing, it's unfortunate that it is only available in one length for AR-10 configs, but it's great for mid or rifle length configs like mine and is perfect for my rifle-length build. There was plenty of room for my adjustable .936 gas block inside, which was something I failed to check before purchasing but all is good.
I feel the grip contour is a little far forward if you plan using the modern facing forward stance. My average length arm feels stretched when gripping and wants to slide back, so a grip stop might be desired... YMMV. But in reality, for home defense I don't think anybody should use a forward facing stance (we don't walk around wearing body armor all day), so that is a nitpick.
I found that the guard fits really tightly onto the nut. When it was delivered to me the barrel nut was stuck inside the guard and I had to dip the end of the assembly in hot water to let the metals expand so I could pull them apart. To assemble, when I slid the guard on to the nut I had to tap it on the last half-inch with a mallet. To get it apart again I will have to build a puller, which is no big deal. Despite the tightness of the fit, I was still able to rotate the guard around to make sure it was clocked and the screws fit perfectly.
One thing worth noting is that while the guard is made out of the fabulous 7075 aluminium alloy, the nut seems to be a softer alloy (maybe 6061 T4?). When I was torquing the nut, my armorers wrench slipped and partially stripped some of the teeth. The wrench still worked even on the stripped teeth, and all was fine, you can't see the damage to the nut with the guard on. But just make sure your wrench is well seated when tightening.
If I were to start from scratch, I would pick this exact guard again and I have no problem recommending it to anybody with similar build parameters. (Posted on 11/12/2016)