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question about 1187 fore end

Discussion in 'Shooting Related Threads' started by ntgr8, May 8, 2010.

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  1. ntgr8

    ntgr8 Member

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    Jan 29, 2010
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    A 20 ga fore end will have to small a barrel groove and to small a hole for the mag. tube to slide into on a 12 ga.
     
  2. mag410

    mag410 Active Member

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    Jan 29, 1998
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    Location:
    NE Mississippi
    Some 1187 fore ends will work with 1100 barrels. 1100 and 1187 gas cylinders are shaped differently. From my experience most of the older 1187 fore ends will not work, most of the newer 1187 fore ends will work. The only way to know for sure is slide it on and see if it seats properly and then that the barrel will not move once the magazine cap is tightened. Which brings up another issue, 1187's use a different method to keep the magazine cap tight. Older 1100 used a pin in a collar on the end of the fore end to keep the cap tight. 1187's use a plastic plunger inside the magazine tube to keep the magazine cap tight. Newer 1100 use the same system. If you use an 1187 fore end on an older 1100 there will be nothing to keep the magazine cap tight.

    Standard weight 20 gauge 1100 (serial number ends in X or N) fore ends are the same size as 12 gauge, except that the barrel channel is smaller to fit the smaller diameter 20 gauge barrel. It would be a shame to use a standard weight 20 fore end on a 12, as that are hard to find. I would sell/trade for a 12.

    LT20's and LW20's Fore ends (serial number ending in K or U)are smaller in all dimensions than 12 gauge and can not be used.

    Early 870 stocks had a deep hole in the stock an used a short bolt(8 1/4"), Since the mid 80's most 870 stocks are drilled as 1100 stocks and use a longer bolt (10 1/4"). You can use an early deep hole 870 stock, but you will have to drill the screw hole large enough to fit over the 1100 main spring tube and use a spacer to make up the difference in the access hole. Any 1100 stock will work on an 870 if the appropriate length bolt is used.

    Michael Goines
     
  3. Brian in Oregon

    Brian in Oregon Well-Known Member

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    Jan 29, 1998
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    Deplorable Bitter Clinger in Liberal La La Land
    "will a 1187 fore end fit on a 1100?"

    Generally, no, at least for wood forends. There are some exceptions to the rule but these are hit and miss. For synthetic forends, Remington made some universal ones, but generally the version for the 1187 lacks the detent required by the 1100 forend cap.

    "Will a 20 ga fore end work on a 12ga gun?"

    No.

    "will a 870 stock fit on either a 1187 or a 1100?"

    It can be made to fit. The 870 stock uses a short stock bolt. Therefore the bearing surface is located closer to the receiver. And the bolt hole near the receiver usually has to be opened up in diameter. The 1100/1187 have the bearing surface near the buttpad. By bearing surface, I mean what the washer and nut bear against when tightened. What's needed for the 1100/1187 is a reasonably thick walled tube that slips over the recoil spring assembly, and can act as a bearing surface.A metal tube works best. Some people use plastic tubes, but they can loosen up more easily.

    Note that some late 870 stocks are actually universal 870/1100/1187 stocks that use a longer stock bolt to fit an 870. These have the bearing surface moved out to the 1100/1187 position.
     
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