Optimal Barrel Length for XCR 6.5 Grendel pistol?

[MeatAxe]

Have been thinking about pulling the trigger on a Rob Arms XCR pistol in 6.5 G. Starting with a pistol so I can legally convert it to a rifle and back again to a pistol, if I choose, without jumping through a lot of batf hoops.

Just wondering what the optimal length would be for a self defense pistol / truck gun in 6.5 Grendel?

Thanks!

[Huckleberry75]

Several of us here have used the Monster 12" bbls and have seen very acceptable accuracy and potency. The 12" is more than capable of taking deer out to 300yds with the right bullet selection and is still very handy for "truck travel". You will highly prefer that length barrel to be suppressed, just an FYI.

[VASCAR2]

[Jakegsxr11]

I have a 12" monster barrel and it works quite well. That being said there is nothing optimal about a 12" barrel. The shorter you go the more you sacrifice in performance vs portability.

[MeatAxe]

Thanks for that information, guys!

One of the advantages of the XCR is the ability to change barrels / convert to other calibers with relative ease. The barrel is attached to the receiver by one readily accessible bolt.

[LRRPF52]

[MeatAxe]

[A5BLASTER]

They dont share the same bolt.

[MeatAxe]

They dont share the same bolt.

[VASCAR2]

[Huckleberry75]

Sounds like they went with the MK 1 (.125") bolt pattern instead of the more common MK2 (.136")

[MeatAxe]

Sounds like they went with the MK 1 (.125") bolt pattern instead of the more common MK2 (.136")

[VASCAR2]

[LRRPF52]

Gents, the OP is talking about the Robinson Arms XCR, not the AR-15.

It has a much larger bolt with a huge extractor, and huge bolt lugs:



None of the AR-15 constraints apply to the XCR. Totally different designs.

It also has different types of Op Rods, gas blocks, gas tubes, and pistons.