Results 1 to 8 of 8

Thread: JP handguard installation-DPMS AP4

  1. #1
    Join Date
    Dec 2009
    Posts
    9
    Feedback Score
    0

    JP handguard installation-DPMS AP4

    Ok so I have a DPMS AP4. The front sight base is a pain to come off. Is it possible to shave it down and leave it on the barrel, then change out the free float it has now with a VTAC/JP handguard. Or will the installation of the new handguard require the gas block to be off? If so I will have a gunsmith complete the process as it is hard to get off the FSB and I do not want to mushroom out the set pins.

  2. #2
    Join Date
    Dec 2010
    Location
    Houston, Texas USA
    Posts
    65
    Feedback Score
    1 (100%)
    Unless it is a low profile gas block it has to come off.
    It was a PITA on my CMMG ~ I had to drill the pins out.
    Going back on is not so hard though.
    Good Luck.

  3. #3
    Join Date
    Jun 2006
    Location
    NoVA
    Posts
    10,780
    Feedback Score
    17 (100%)
    The JP uses it's own barrel nut. The entire gas system must come off for installation.
    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

  4. #4
    Join Date
    Dec 2009
    Posts
    9
    Feedback Score
    0
    Thanks for the response. Looks like I will try heating the pins and punching them out and drilling if that doesn't work

  5. #5
    Join Date
    Dec 2009
    Location
    Utah
    Posts
    8,395
    Feedback Score
    3 (100%)
    I'm told JP recommends red locktite when installing their handguard. Is it necessary?
    INSIDE PLAN OF BOX
    1. ROAD-RUNNER LIFTS GLASS OF WATER- PULLING UP MATCH
    2. MATCH SCRATCHES ON MATCH-BOX
    3. MATCH LIGHTS FUSE TO TNT
    4. BOOM!
    5. HA-HA!!

    -WILE E. COYOTE, AUTHOR OF "EVERYTHING I NEEDED TO KNOW IN LIFE, I LEARNED FROM GOLDBERG & MURPHY"

    http://i115.photobucket.com/albums/n289/SgtSongDog/AR%20Carbine/DSC_0114.jpg
    I am American

  6. #6
    Join Date
    Jun 2006
    Location
    NoVA
    Posts
    10,780
    Feedback Score
    17 (100%)
    Quote Originally Posted by MistWolf View Post
    I'm told JP recommends red locktite when installing their handguard. Is it necessary?
    Yes it's required to keep the threaded on flange from spinning when torquing the unique JP bbl nut.
    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

  7. #7
    Join Date
    Mar 2011
    Posts
    5
    Feedback Score
    0
    In order to save yourself a bunch of grief why don't you just contact JP and ask them to do the job for you? I did and it turned out great I think it cost around $205 total.
    Last edited by 3kids1gun; 03-28-11 at 21:36.

  8. #8
    Join Date
    Dec 2009
    Location
    Utah
    Posts
    8,395
    Feedback Score
    3 (100%)
    Wouldn't it work if the FSB were shaved, then simply unpin the gas tube and remove it? Isn't the gas tube installed after the barrel nut is tightened anyway?
    INSIDE PLAN OF BOX
    1. ROAD-RUNNER LIFTS GLASS OF WATER- PULLING UP MATCH
    2. MATCH SCRATCHES ON MATCH-BOX
    3. MATCH LIGHTS FUSE TO TNT
    4. BOOM!
    5. HA-HA!!

    -WILE E. COYOTE, AUTHOR OF "EVERYTHING I NEEDED TO KNOW IN LIFE, I LEARNED FROM GOLDBERG & MURPHY"

    http://i115.photobucket.com/albums/n289/SgtSongDog/AR%20Carbine/DSC_0114.jpg
    I am American

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •