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  1. SIG Sauer Rifles
    New here. Was looking for the Rattler Canebrake but it’s out of stock everywhere. Wondering if it’s possible to build out a standard Rattler to look like the canebrake?
  2. SIG Sauer Rifles
    I just picked up my Rattler with the SBA MPX brace. Looking for a minimal sling very similar to the Frank Proctor's. My concern with his is that it will be too long for the shortness of the MPX Rattler. Anybody have the FP sling paired with their Rattler?
  3. SIG Sauer Rifles
    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!
  4. SIG Sauer Rifles
    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...
  5. SIG Sauer Rifles
    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...
  6. SIG Sauer Rifles
    Hey gang, long time listener first time caller. I'm the proud owner of a new Rattler. Not much done to it as of yet; Inforce WML on the front and a whole bunch of things in the mail (collapsing SBR stock, Romeo 4T, reduced angle MCX grip, Tread vertical grip, SRD762). The one part that HAS...
  7. SIG Sauer Rifles
    So I may or may not have crushed the crush washer, that instructions say should go between the muzzle base device and the micro muzzle brake...this is going on a Rattler Canebrake, and will only be shot suppressed, from here to eternity. Do I absolutely need the crush washer and/or the muzzle...
  8. SIG Sauer Optics & Electronics
    In need of input / thoughts and experience on installing a small red dot (green dot) optic on a Rattler in 300BLK. For longer ranges, I want the option to add a magnifier, so concerned about getting eye relief factors on what is technically a hand-gun with an arm-brace. Not sure about...
  9. SIG Sauer Rifles
    A few weeks ago I started snooping around this thread about MCX barrel fitment and rattler compatibility. You guys pointed out that the only extra part needed to make a rattler barrel work in a regular MCX (Virtus and Gen-2) was the oprod that attached to the BCG. Sig doesn't offer this...
  10. SIG Sauer Rifles
    finally got tired of waiting for Sig to have their MCX adapter in stock. I had a SBR lower I wanted to use. So I designed my own to work with an AR15 lower. I’ve tested it with the SB folding buffer tube adapter and a generic folder I had laying around. From the pictures it doesn’t look like it...
  11. SIG Sauer Rifles
    Ever since I got my Rattler for Christmas, I've been itching to get it to the range and take it for a spin. I always like to hear unbiased amateur "First Shots" reports from you guys, so I figured I'd share mine. Situation: - Weather was partly cloudy and mid-40's ... dry and with light wind...
  12. SIG Sauer Rifles
    I realize I'll get the "dumbest post of 2018" award, but I've searched here and Google and am still ignorant. I know the "+" vs. "-" setting, but my question is even dumber. How do I tell which it is set to? My manual tells me about "pushing the lever down" but I don't even see a lever. I...
  13. SIG Sauer Rifles
    MCX Rattler 5.5", as well as Virtus Patrol 16", barrel thread neck seems to be so close inside the hand guard narrow opening. Can a Sandman-S with a KeyMo QD mount fit on a Sandman muzzle break attached on the Rattler short barrel?
  14. SIG Sauer Rifles
    Is the factory-installed flash hider on the current MCX Rattler set up to accept the Sig QD suppressors (Sig Sauer SRD762 QD, Sig Sauer SRD762Ti QD)? Or does one need to buy one of Sig's flash hiders or muzzle breaks to accept the QD? Thanks very much.
  15. SIG Sauer Rifles
    Just picked up my new "toy". VERY excited. Mounted my ASR Brake right away so that the first rounds down-range are suppressed 300-BLK through my Chimera-300. Picked up some standard and subsonic Hornady ammo on the way to the gun shop ... so all good there. Giving the Rockset 24 hours to...
  16. SIG Sauer Rifles
    Considering buying one of these bad-boys, but needed to know the muzzle thread pattern first to make sure I'm buying the right ASR mount to fit my SC Chimera-300. The SIG site lists the "Threads" as "N/A" ... not particularly helpful. Anybody know the answer? Is it 1/2-28 ... or 5/8-24 ... or...
  17. SIG Sauer Rifles
    So I'm looking for a good AR 300-BLK in a "pistol" form-factor and I'm considering the Rattler PSB, which I would then convert to SBR via online ATF Form-1... takes a few weeks instead of many months for approval. My intention / end-state is a suppressed SBR in a foldable and very compact...
  18. SIG Sauer Rifles
    I'm having a hard time making a decision on which optic to use on a rattler. Please tell me what optic you are using and why (photos appreciated!)
  19. SIG Sauer Gunsmithing
    Hi, does anyone know if the MCX Rattler's trigger is compatible with a mil-spec trigger? 8.5 lbs is a bit much for me. Thanks so much!
  20. SIG Sauer Rifles
    Guys, I went ahead and bought the Sig MCX Rattler PSB because it's available.. and well I can... But it is only available in .300 Blackout. I really need 5.56 for duty carry in the patrol car. Does anyone know what the proper part number for a 5.56 Barrel would be from Sig? I found this one...
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