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AR15.COM
9/17/2026 11:35:05 AM EDT
You guys make a 20” A1 barrel but it only has rifle ramps and you make flat top uppers but they all have M4 ramps.

I can’t find rifle ramp flat tops anywhere, they seem nonexistant.

I get that the clones are a set piece but have you ever considered M4 extension 20” pencil barrels? I’d buy one with a pinned FSB immediately.
9/18/2026 9:12:40 AM EDT
[#1]
Originally Posted By King_Mud:
You guys make a 20” A1 barrel but it only has rifle ramps and you make flat top uppers but they all have M4 ramps.

I can’t find rifle ramp flat tops anywhere, they seem nonexistant.

I get that the clones are a set piece but have you ever considered M4 extension 20” pencil barrels? I’d buy one with a pinned FSB immediately.
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@Mike_NDS
Palmetto State Armory
3760 Fernandina Rd
Columbia, SC 29210
Web Sales: 1-803-724-6950
9/18/2026 9:33:29 AM EDT
[#2]
A rifle ramp flat top would be just fine too.
9/18/2026 10:44:20 AM EDT
[#3]
We had some A1 barrels with M4 feed ramps in the past.

This was only as stop-gap because we couldn't source Rifle extensions. We have no plans to do a 20" pencil with M4 ramps.

This upper was made both ways, but the barrels and uppers generally matched. Ramp/Ramp or Rifle/Rifle

https://palmettostatearmory.com/blem-harrington-richardson-dmr-complete-20-upper-1-7-black.html

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