AR guys! What are these for?

[super_dave]

Small hole in the bottom of the buttstock?

Hootus on the bottom of sight/ gas block?

I wanna put a sling on here but don't wanna buy unnecessary parts to mount it

[Maddox]

Bottom of sight is for a bayonet.

The bottom of the stock is probably for some type of sling.

[LWD]

Bottom of sight is for a bayonet.

The bottom of the stock is probably for some type of sling.

Yep.

LWD

[Maddox]

Is that a quad rail? Buy a adaptor for the quad rail to mount a sling and attach the other end to the stock.

[tfrye]

Bottom of sight is for a bayonet.

The bottom of the stock is probably for some type of sling.

Exactly right there

[super_dave]

Is that a quad rail? Buy a adaptor for the quad rail to mount a sling and attach the other end to the stock.

It has a sling mount already on the front of the rail
Bayonet sounds sweet!

[Drycreek3189]

Bipod ?