Gunsmithing MK 13 Optic Base fitting to Stiller MK13 action.

[LRI]

We charted this ground almost 5 years ago. The problem is the Mars rail is meant for an M700 yet were installing it on a Stiller MK13 action. One has a constant dia action where's the other does not. The hole locations on the rear bridge feature of the base are also in a different position. Next, the roll pin installed in the base has to go away. After that the base must also be drilled for the pair of dowel pins installed in the receiver. Last, the Stiller actions have an RF ID tag that is probably worth more than the action itself in terms of novelty and intrinsic value. The base as delivered would ruin it.

To do:

• Plug existing base hole and machine plug to match STENAG rail features
• Relocate base hole
• Drill pair of holes for dowel pins
• Clearance for RF ID tag
• Surface bottom of base for receiver contour
• Clearance ejection port features
• Edge prep ejection port features so the shooter doesn't get chewed up. This thing could host its own Blood Drive.
• Sterilize and surface prep for coating
• Ceracote in Graphite Black
• Final Assembly

The photos illustrate the work as it progresses through

 

[LRI]

 

[LRI]

 

[FatBoy]

That's a shit load of work. You just bored or did a customer have to have it?

 

[LRI]

That's a shit load of work. You just bored or did a customer have to have it?

This is all customer stuff. We started offering this about 5 years ago for guys that want "correct" MK13's. A handful come through every year. Not too big a deal anymore. About 4 hours of work start to finish. Just a nice way to complete it without cobbling it together.

 

[Waorani]

Love all your how-tos and the detailed photos!

 

[MarkP17]

A huge thanks to Chad for completing my rifle. It's been a long time and I should've posted a comment last year!

Semper Fi!!

 

[LRI]

A huge thanks to Chad for completing my rifle. It's been a long time and I should've posted a comment last year!

Semper Fi!!

Your welcome and thanks for the kind words. Kinda glad you brought this up. We have one in process right now and this thread provides a good "note book" on how I do it. As I said, we only see one or two of these a year now... lol.