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Old 03-04-2014, 01:28 PM
Goodguy729 Goodguy729 is offline
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Need help: Forend rail for M&P 15 Sport Need help: Forend rail for M&P 15 Sport Need help: Forend rail for M&P 15 Sport Need help: Forend rail for M&P 15 Sport Need help: Forend rail for M&P 15 Sport  
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Default Need help: Forend rail for M&P 15 Sport

I recently purchased an M&P15 Sport, and wanted to install a picatinny forend rail to go on the stock forend. I purchased the carbine-length ProMag Aluminum Rail (PM003D). The rail has a length of 4.625" with mounting points on 3.786" centers. Unfortunately, that doesn't space out well on my M&P 15 Sport. Can someone recommend a good carbine-length rail (preferably aluminum) that has the correct hole spacing so I can mount it on my stock forend? Many thanks!!!
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Old 03-04-2014, 02:15 PM
Ricer2231 Ricer2231 is offline
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Tagging this because I want to do the same thing soi can mount a vertical grip on my factory hand guard.
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Old 03-04-2014, 05:27 PM
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JaPes JaPes is offline
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The M&P 15-Sport is issued with a non-standard handguard. It lacks a heat shield and is narrower in diameter than a Mil-Spec handguard. I've not attempted to mount a rail to the stock 15-Sport two-piece handguard, so I can't give you many suggestions.

What I can point you to is to a carbine length, two piece, drop in rail system. No replacing the front sight post, delta ring, etc.

Midwest Industries: Tactical Handguards

https://troyind.com/rail-systems-accessories/rails/drop

If you don't want to spend that much $$$, hop on E-bay. The first rail I ever installed on my 15-Sport was an aluminum 2-piece drop in carbine length quad rail. I think I paid about $25 for it. I liked it enough and bought two more for holiday presents. My buddies still have them mounted.
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Old 03-04-2014, 06:46 PM
WU_Who WU_Who is offline
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You can mount a magpul rail to the current Sport handguard but it is polymer. I liked it with a simple pro mag VFG. Solid feel and very light.
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Old 03-04-2014, 08:17 PM
kingwood kingwood is offline
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don't know how much $ your looking to spend but you could go with a troy free float and cut your sight post for the gas block, and have around $200 in it, watch ebay for the magpul front sight you can pick them up cheap ($30-50)
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