Home CMMG Teaser – AR-15 Receiver Extension/Buffer Tube Installation Jig (Link in Description)

Teaser – AR-15 Receiver Extension/Buffer Tube Installation Jig (Link in Description)

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Below is the link to the manufacturer.

I purchased this product with my own money. I receive no financial gain for linking or showcasing this product.

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37 COMMENTS

  1. Just received mine. Looks like the current version only have plastic tightening screws along the top, not all three sides.

    Biggest problem is I don't have any builds planned right now to use it on and I'm fighting the urge to take the receiver extension off of one of my finished rifles… I don't want to have to re-stake it, though.

    Question… has anyone ever looked for or sound plastic screws that fit that have larger knobs on the end? Mine are cranked down so tight that I can't loosen them by hand. Having a larger gripping surface to twist them might be a good idea for thew future…

  2. I've had good success trying to clock the receiver extension opposite of the direction of turn when I go to torque it. It isn't much, and it took a bit of trial and error to figure it out but works well for me as a hobbyist.

  3. They should have made it so it snugs up on the wrench so it doesn’t slip off like when you use your geissele you always snug it up to your wrench.. they should have made like the back half inch on tracks where you could slide it back and fourth and then snug some screws down real quick and then unscrew to move back out to reposition your wrench.

  4. I made something to accomplish this with two close-set vices using an extension jig and mag-well jig – this will be MUCH better. I want one! Can't wait to find out when it will be available. Probably pricey, but what isn't? Buy once, cry once.

  5. Why so much metal? The forces shouldn't be THAT much when tightening down to where that big brick of a thing is needed. I feel like the only tightening adjustments needed should be the top screws and a clamping system of some kind on the bottom protrusion of the extension. Removing those two big wings on the side should reduce production costs.

  6. Great video. Brand loyalists lesson hobbyists chances of getting honest feedback from people who, in a lot of cases, have extensive experience with that brand's products , because they are so infatuated with a brand that they will never admit any issues with a product put out by them.

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