This is purely for informational purposes, because my google fu failed me, not how to get my MCX to do this. I have a hybrid, and I know the PMM kit exists if you want to drill holes to use an AR trigger group (if anyone knows how well those full auto triggers or FRT style triggers work with the...

I'm looking/hoping to use my Magpul MS4 Dual QD Sling (Gen2) on my yet to be delivered Canebrake... That said, it appears that there's a QD on the M-LOK hand guard, and I'm guessing the one in the bottom stock is decoration as opposed to being a functional QD. Ideally, I'd really like is to...

Its been a hell of a year sourcing parts for my build. I got a sig virtus upper and found a complete mcx legacy rifle. I sold the legacy upper and I am now using the virtus upper on teh legacy lower. I didnt even think to see if the legacy lowers were compatible with virtus uppers. Question is...

Hello, I recently decided to build a MCX upper for my AR lower since I was tired of waiting for complete uppers or whole guns to become available. I bought the receiver housing first and I recently bought the bolt, bolt carrier assembly, and recoil assembly. I’m currently in the market for a...

Anyone got any pics of the original gen 0(?) Mcx with the angled magwell and rounded mag release raised area? Need pics of the lower receiver if you got any. Trying to see the difference in generations and can’t find that one anywhere but have seen it somewhere in the past. Might be part of the...

Hi guys, Just thought I’d share my experience building my own Go Bag for my Virtus SBR and hope it helps some out there. After investing several hundreds of hours searching and researching (as I always do with most things I buy) for an edc bag solution that looked more civilian than mil, I...

I just picked up one of those Stop Box AR Chamber locks when they were on sale to see if it would fit my MCX Hybrid build with a Virtus upper. The it is a little tight, but it clicks into place without too much fuss and with no modification. Apparently the main issue with these locks was...

I have heard there were issues with the MP-5 style collapsible stock for the MCX and hybrid lowers. I'm trying to find a stock as I am not quite satisfied with the M4 style buffee tube knuckle adapter that came with my hybrid kit. I am mostly interested in the collapsible stock but an...

Hey guys, hope everyone is doing well out there in these crazy times. I’ve picked up an SBR recently and had a LGS put on a Cherry Bomb when it got out of NFA jail. After realizing I hated the look, I went to another gunsmith to have them take it off and replace with a Xeno device. When the...

What do you recommend bare minimum to have on stand by. Also where can u find?

After reading all the posts about POF roller cam pin, I think it would be a great investment. My question is, which roller cam pin (5.56/7.65) do I need for my MCX rattler 300BLK (5.5in)? I'm obv very new to the AR world. Thanks ahead guys!

I’m considering purchasing a Surefire SOCOM300-SPS Fast-Attach Suppressor for use on a Sig MCX Rattler .300 Blackout SBR. Is there enough space to mount a SOCOM300-SPS Fast-Attach Suppressor and its quick attach flash hider suppressor adapter to the MCX Rattler without hinderance from the...

So I purchased my MCX Virtus off of Gunbroker a couple of months ago. After changing the trigger, mag release and installing the LPVO, I finally got the time to get to the range today and on the first shot, I had a FTE. I was running the gas system on (-) so I swapped it to the (+) and fired the...

I'm working up some reloads for my Sister who bought a 300 Blackout version of the MCX. She is not using a silencer. She originally purchased some factory rounds, Subsonic Remington UMC 300 AAC Blackout 220 Gr. and because she is not using a silencer there is not enough pressure to cycle the...

Hi all. I'm trying to remove the hinge pin on an OEM MCX folding stock (doesn't matter which, they all use the same assembly) The pin is secured at the bottom by a circlip but I can't see any way to remove it. The shell of the folding knuckle is a tight fit around the clip, it doesn't have any...