AXMC SFP bolt shroud assembly question, same lugs as LFP bolt shroud assembly?

[Kiba]

Question for AXMC shooters that have the new factory AI small firing pin bolts or have swapped their LFP bolts to SFP bolts:

I know the firing pin itself is obviously different, but is the firing pin shroud assembly (the part containing the safety lever that locks into the bolt body) the same between the LFP and SFP?

I'm hoping I can keep my existing serialized LFP bolt shroud and just buy a new small firing pin and swap the current large firing pin for small firing pin. It's an easy swap, 2 set screws, reset firing pin protrusion, done. I really don't want to spend $500+ on an complete SFP bolt shroud assembly if I don't have to if I can simply swap a $100ish small firing pin onto my existing bolt shroud.

Reason I'm asking if I'm wondering if AI did something silly like change the size or shape or spacing of the SFP bolt shroud bayonet lugs so you can't stick an SFP bolt shroud assembly into an LFP bolt body or vice versa. I don't have a factory AXMC SFP bolt or SFP bolt shroud assembly on hand to check.

 

[Jrb572]

It all works together.

Have the bolt sent out and your firing pin turned down to size

 

[Kiba]

It all works together.

Have the bolt sent out and your firing pin turned down to size

I already had my LFP bolts bushed by LRI, but for some reason I want to change to the factory SFP bolts because of the arguably better design of the AI firing pin (a much shorter length of the smallest diameter portion of the firing pin compared to my LRI bushed bolts which have a rather long but fully supported small diameter tip, similar to a factory R700.)

I just remembered I recently snagged a factory 308 1.6mm small firing pin bolt body off the PX here... I'm going to pull the LRI turned down firing pin out of my LFP bolt shroud assembly and see if the shroud will lock into the new 308 AI factory 1.6mm SFP bolt body. If the shroud will physically work, I just need to call Mile High and order a 1.6mm firing pin.

 

[Nik H]

Question for AXMC shooters that have the new factory AI small firing pin bolts or have swapped their LFP bolts to SFP bolts:

I know the firing pin itself is obviously different, but is the firing pin shroud assembly (the part containing the safety lever that locks into the bolt body) the same between the LFP and SFP?

I'm hoping I can keep my existing serialized LFP bolt shroud and just buy a new small firing pin and swap the current large firing pin for small firing pin. It's an easy swap, 2 set screws, reset firing pin protrusion, done. I really don't want to spend $500+ on an complete SFP bolt shroud assembly if I don't have to if I can simply swap a $100ish small firing pin onto my existing bolt shroud.

Reason I'm asking if I'm wondering if AI did something silly like change the size or shape or spacing of the SFP bolt shroud bayonet lugs so you can't stick an SFP bolt shroud assembly into an LFP bolt body or vice versa. I don't have a factory AXMC SFP bolt or SFP bolt shroud assembly on hand to check.

Being LH, I can't purchase an SFP assembly for my MC. However, I have seen the AI SFP bolt body and do not believe that it was any different in how it connects to the shroud assembly.

A quick call to MHS will get you an answer.

 

[Jrb572]

It works. I have a large firing pin shroud with the firing pin turned down in mine.

 

[Kiba]

Just tested it, my LFP shroud and LRI bushed firing pin locked right into my factory AI 1.6mm SFP 308 bolt, so the shroud is the same between factory AI SFP and LFP bolts.

I'll order the new 1.6mm SFP 300wm bolt right now to lock in the good black Friday price and then call mile high on Monday to order 2x factory 1.6mm firing pins.

Of course the 1.6mm lapua bolts are out of stock now, they were in stock 2 weeks ago... Lol