Magpul ACS just installed now it is stuck when fully collapsed! Help!

marathonrunner said:

I just picked up my MP Sport II and so far not a happy camper. The stock handguards were not seated all the way inside the delta ring and now after installing Magpul ACS, it is stuck all the way in the collapsed position. No matter what I do I cannot get it to budge or move to the rear.

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marathonrunner said:

I just picked up my MP Sport II and so far not a happy camper. The stock handguards were not seated all the way inside the delta ring and now after installing Magpul ACS, it is stuck all the way in the collapsed position. No matter what I do I cannot get it to budge or move to the rear.

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MichiganScott said:

Every shooter that owns an AR-15 needs a handguard tool. They are less than $20 shipped.

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Robot Devil said:

I installed a Magpul CTR a week ago, it needed a little more force than I realized to get it to slide on. I agree with MichiganScott though; it's not a problem with the rifle, it is probably the stock or user error. Magpul stuff has a rep for great quality.

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marathonrunner said:

I just picked up my MP Sport II and so far not a happy camper. The stock handguards were not seated all the way inside the delta ring and now after installing Magpul ACS, it is stuck all the way in the collapsed position. No matter what I do I cannot get it to budge or move to the rear.

Click to expand...

fyimo said:

I have 3 entry level AR-15's and one of them has a commercial buffer tube and two have Mil-Spec buffer tubes. The S&W M&P Sport II was a Mil-Spec buffer tube by the way.

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marathonrunner said:

I bought a Mil Spec ACS and I can tell you the front barrel end cap is not mil spec as it does not fit another drop in that I used on my Windham's. The barrel end cap is way too big.

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shawn mccarver said:

This is one, among many, reasons I buy it the way I want it, and do not try to do "add-ons."

After four and a half decades of shooting, the first couple of decades ruining some good Colt 1911s and some great S&Ws by letting nationally known gunsmiths mess them up (in one case, the hammer followed on my 1911 after the work, but not before), I learned my lesson long ago that either I or even a well known gunsmith, can screw it up more often than not, and even when I do not, I often end up switching it back to the original configuration.

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marathonrunner said:

I am not sure about Magpul Quality. The MOE front hand guard I used on another rifle, I have never got the barrel hot but where the mounting threads are that locks into the barrel nut was melted slightly.

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