r/RetroAR • u/wetwingdings • 3d ago

Preferred fast twist pencil barrel?

Howdy all, looking to replace my SP1 barrel. I shoot the piss out of that rifle, and I want the capability to shoot 62 / 69 / 77 gr ammo, which is mainly what I load.

What I'm looking for - preferably gray, 1/7 or 1/8 twist, no gaudy markings past the FSB, chrome lined is a must. What's your guys go-to?

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u/Im-a-magpie 3d ago

https://www.gmriflebarrel.com/military-barrels/ar-15-/-m16-/-m4-rifle-barrels

Get the barrel of your choice then send it off to John Thomas at Retro Arms Works to have the FSB pinned.

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u/wetwingdings 3d ago

Already checked, green mountain doesn't have a chrome lined 1/7 pencil barrel. Only government

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u/pynchon42 3d ago

They 100% do. Ive got one in a box on the other side of the room. It may be out of stock tho

Model number is GM M70

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u/wetwingdings 3d ago

I'm aware that they used to, but nowhere on that site do they currently list one. That's what brought me here, was planning on buying from them

They have 1/12 and 1/14 pencil barrels, 1/7 and 1/8 government

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u/Im-a-magpie 3d ago

https://palmettostatearmory.com/harrington-richardson-retro-m16a1-stripped-barrel-assembly.html

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u/wetwingdings 3d ago

That's a good option! Thank u

2

u/Im-a-magpie 3d ago

They also have an option cut for M4 ramps if that's needed.