Peep sight
pulleys
the threaded holes are for removing the rotor. If the rotor does not come off with ease, a bolt of the same size can be inserted in and the rotor "pryed" off, using a socket set.
thin material holes can be welded and ground flush, think material can be threaded and plugged. Bondo works, too.
14 mm
Don't alter your BLR by drilling holes in it. Instead, find a receiver sight that utilizes the existing scope mount holes in the top of the receiver. Extra holes are unsightly and they destroy much of the rifle's resale value, especially to collectors. It is best not to make permanent alterations to a firearm such as yours. That's my answer.
drill 2 holes at each end of the bootlid to correspond to the threaded bolts on the spoiler then sit the spoiler in the holes and bolt from inside.
The threaded holes are the air reactor [AIR] fitting, an exhaust gas recirculation [ERG] fitting or choke stove. Check out DormanProducts.com. copmagnet95@hotmail.com
None
On the drum there is 2 threaded holes. Take 2 bolts and thread them into the holes, until the cover comes off.
4 bolts on the bottom of the frame. The holes are threaded ready to go.
there should be two threaded holes visible on the rotor hat . You can thread bolt into the holes with a ratchet to push the rotor off the hub
Notice there are two threaded holes in the brake drum. Insert a metric bolt into the holes and tighten until the drum pops off. Replace the stud.