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Review of FAB BM-4


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I just bought a BM-4 polymer 4 rail forearm a few weeks ago from Botachtactical. It did not come with any instructions for installation. I have a Benelli M4 model 11717(desert cammo) and i could not get the BM-4 to fit on properley. I found a link by ATT tactical that had instructions to modify the BM-4 so that it would fit on the M4. I followed the instructions and got the BM-4 to fit. The BM-4 fits really tight and took a good beating at the range. I used a fore pistol grip which gave my M4 great control and comfort when i shot some three inch oo buckshot. My fore pistol grip actually broke off the BM-4 after a few shots. After i was done at the range the BM-4 was still tight and was not damaged by the fore grip breaking off.

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Thanks for the heads up!, but i think ive already been ****ed over. When i orderd my BM-4 i also ordered a UTG fore pistol grip for 15 bucks but it was not in stock so i didnt get it in with my order. I will have to check but they said my card was not charged for the grip.

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Sold me something for my 11017 when the part came and did not fit (it was for 1014) he told me he would not charge me for a restocking fee and would only give me credit.

 

Sorry not to answer question, but I couldn't help it.

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It took my brother and i about one hour or so. It helped me to grind one side of the BM-4 at a time, then take that side and place it on the shotgun to check the spaceing. It was hard to see were the BM-4 needed to be grinded when both sides were on at the same time. When both sides were the same i fitted it on the shotgun nice and snug then tightend it down with the screws. The top rail of my bm-4 is slightley off center and a tiny bit high from the one on my M4.

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Where would it say if it is a 1014, 11707, or 11717?:confused: None of those numbers are on my shotgun. All it has is M4 right underneath the breach.

 

It would say on the box.

 

Also, see if you have a milled recoil tube with notches cut in it.

 

Or see what year your gun was made in.

 

If its a new gun, more than likely it's a 11707, it's been their main model for 3-4 years now I beleive.

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HI could someone please send me the link of the instructions how to modify and install the quad rail on the m4 i waited to get this rail for like 6 months and thought it would be fitted on directly and only to see i need to modify. Please someone send me a link or good isntructions where exactly it needs trimming and how much i really want this on it.

 

Thanks

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