Seekins billet ar uppers

[SSG3K]

Im gonna buy one in the next couple days and I havent been able to find out if they are m4 or standard feed ramps? I dont care but I need to know what barrel extension to install.

Thanks for the help.

Rich

 

[dreiaugen]

Re: Seekins billet ar uppers

From the Seekins 2012 catalog:

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">7075-T6 Billet
Type III Hard Coat Anodize
Screw in forward assist retainer
Magpul BAD lever compatible
<span style="color: #FF0000">M4 Feed Ramps</span>
iRMT Titanium barrel nut*
Captured door pin
SP Unconditional warranty
*only included with iRMT uppers</div></div>

 

[Unknown]

Re: Seekins billet ar uppers

You can use M4 feed ramps on a barrel extension along with M4 receiver cuts.

You can use M4 feed ramps on a barrel extension with standard receiver cuts.

You can NOT use M4 receiver cuts with a standard barrel extension as doing so is pretty much a guarantee that your bullet noses will stick when they hit where the un-cut portion of the barrel extension covers the M4 receiver cuts.