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Posted: 9/23/2008 7:31:17 PM EDT
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I'm looking at picking up a new Colt 6921 M4 and had a few questions regarding accessories as I'm trying to clone what a Military issue M4 would look like just for shits and giggles. Rail System - Kights Armament RAS or Free Float RAS: I'm not a huge fan of non-free float rails so I would rather get the FF RAS but do they issue these regularly in the military or is the normal RAS the only one used? Stock - I like the look of the SOPMOD. I know it isn't probably issued as much as the normal collapsible stock but am I wrong to say that it is issued quite a bit as part of the SOPMOD kit? Pistol Grip - Stick with the stock grip or go with something like the Tango Down Grip? Optic - Aimpoint or Acog: I figure either will work and might just have to decide based on the money I have at that point. BUIS - I don't really have any idea what BUIS they issue with M4's - Knights Armament, A.R.M.S.???? Thanks guys! -Mike |
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I like Daniel Defense's rail system, No one seems to give it any praise's or maybe I'm just blind and still crispy from the oven (new) the LMT Sopmod is awesome. The Army uses generation 2 stock for the Colt. GG&G make a nice grip and so does Tango. Go with what's comfortable, same thing with stock. Magpul makes a really nice stock that relieves alot of the impact. Either go with Troy BUIS or LMT, I'd go with LMT. By the way I think the Colt 6920 is closer to the M4 then 6921. Get some other opinions on here some may agree, most might not. good luck with your adventure. Colt is a GREAT product.  A.Phelps |
what about Eotech? I've seen them, but it seems like M-68 is favored here |
I made up this M4 clone, based on a Colt 6400c and a Colt 14.5" upper as an SBR, did the research and equipped it as a typical GI M4 carbine based on a bunch of research (and looking at photos from the sandbox)   KAC non free float RAS, with KAC rail covers Surefire M951 light Matech BUIS (that's what the Army uses primarily) Trijicon TA31F ACOG Insight Technologies AN/PEQ 2a Vickers Blue Force Sling As for your other questions, I've seen pics quite a few equipped with the SOPMOD stock. An Aimpoint Comp M2, Eotech 552 and the Trijicon ACOG are all used on the M4, with the Aimpoint seeming to be the most numerous. |
The 6921 is closer to the M4 as it has the 14.5" barrel (NFA item). The 6920 has a 16" barrel. |
Now that is a very nice looking M4 is that a LMT M203? |
No, Colt M203. Those pics are from a good friend of mine who is a Marine Scout Sniper. Notice the surefire suppressor as well. So that there is the real deal close up if anyone is interested in making a clone build. |
nice looks awefully heavy though! |
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Thanks for the replies everyone. To clarify: This rifle will be more a collection show piece rifle as I already have a Noveske N4 for a GTG/Training rifle, and an MRP w/ Acog for fun range shooting. I'm a huge fan of Troy sights, Larue/DD rails, etc. but I'm trying to keep this rifle as close to a true Military M4 clone as possible...hence the KAC rails etc. I also figured the 6921 would be best because it has the 14.5" barrel and has an M4 Rollmark where the 6920 does not. I don't know a whole lot about the normal KAC RAS rail...I have a Surefire M900 light/vfg that I'll probably put on this rifle as I don't really have another gun that needs it. Will the weight of that make the RAS move around or twist...or affect accuracy? That is the main reason I'm still thinking of the FF RAS. Also, I think I'm going to go with the Knights Armament NT4 suppressor as well since it's the can I always see on the SOPMOD kit photos. |
Thats a Knights can not a Surefire. |
6921 (w/ perm extended A2?) is the way to go.
The RAS locks up tight and will be more in keeping with your "M4 clone" goals. |
| The SopMod stock is nice but check out the Magpul CTR Stock, I like mine alot. as for this military stuff.. just get what you like.. as for the pistol grip check out the ERGO SureGrip its very good much better then the tango down pistol grip.. as for the BUIS I know the military uses the MI ERS but I went with the MI SPLP much more low profile look to it.. as for the Aimpoint vs ACOG that is up to you.. if you are going to be doing more CQ shooting stuff within 25 yards even 50 yards then the Aimpoint will be fine but if you are going to be doing more shooting 50 yards and up then you cant go wrong with the ACOG since it works pretty well in CQ if you ever needed to use it (it does take some time to learn BAC and shooting CQ while using BAC tho so practice) the MI Drop in Rail system will do for you but I would say go with a FF rail system if you are going to be doing alot of longer range shooting and it will be better on the barrel if you ruff handle the AR.. |
Yeah, your right. KAC NT-4. The surefire can is on the M40 he has. |
Stamp takes forever, I was thinking about getting the 6920 but i want more of a clone as well, So I ordered the forms and I'm waiting and I'm probably going to wait for A LONG TIME! like I did with my conceal carry permit. As AC/DC said in a song "It's a long way to the top if you want to rock and roll!" A.Phelps |
| If you want to see some of what is, & is going to be put on the M4 platform...Click Here...It lays out the SOPMOD Block I & II programs by NSWC Crane. |
Well from what it looks like besides taking alot of time out of your life to run these forms to the correct people (Chief of Police, Head of the Sheriff's Office a Judge or what have you.) it can take anywhere from a month to three months. They have to do an F.B.I background check. So you definately have to have some patience. I just thought Well I have a LMT CQB and a S&W M&P AR15T I guess I can wait a few months and run with my head up my ass for three months without purchasing that beauty of a rifle. All good things are worth waiting for and this is one of those things. A.Phelps |
Rails system - KAC RAS non FF Stock - LMT SOPMOD stocks are regularly issued to line units as upgrades pistol grip - as issued, but many soldiers choose to swap them out, I've seen just about every kind, from G27 to MIAD to ERGO to Hogue, ect. ect. Optics - it will offer differ by unit, and which optics they received, but the basic combat optic is the M68CCO, so if it's older, it will be an Aimpoint M2 in a QRP mount, or the Aimpoint M4 with the QRP II factory mount. The M4 has replaced the M2 as the M68CCO for all new purchases. The military did not ever purchase the M3 model officially. Some units also use the MARS sight, as well as the EOTech, usually the 552 model. ACOGs are usually the TA31F or TA31RCOM4. The TA01NSN is also common in some units who get their ACOGs earlier, and I've yet to see the M150RCOM4 in service just quite yet, though they have been purchased, so they should be showing up soon. Some units have also been issuing the TA01NSN with JPoints. A couple of other sights show up from time to time as well, but for the majority of the rifles you see will be M68s or TA31Fs. BUIS - the standard BUIS is the MATECH 0-600m BUIS. Early on, some units used the KAC 300m BUIS, or made small unit purchases like ARMS or GG&G A2 BUIS. However, BUIS are no longer in such short supply and the MATECH is issued with the weapon. For weaponlights, the favorite seems to be the Surefire M951XM07, though several different kinds of lights are out there used by different units, including the M900, M600A, Pentagon lights, ITI M-3X, ect. Also, the vast majority these days are issued with IR pointer/illuminator. Some AN/PAQ4Cs are still around, but most are either AN/PEQ-2As, which are being rapidly replaced by the newer AN/PEQ-15. This will get you a basic USGI clone, but many servicemen make their own modifications to their weapons, as well, and set them up differently, hence some are seen with CTR stocks, Tango Down rail covers, LaRue mounts. Also, the guidelines above are for "average Joe" line units. More specialized units also tend to get more specialized gear, to include such things as S&B Short Dots, FF RAS, sound suppressor systems, ect. ect. HTH, ~Augee |
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