Hi Nutz,
I came home last Thrusday to find a fresh Colt 901 waiting for me, so I thought I'd do Jason and the Team at 'I Run Guns' a solid, by posting (my first Thread, and) a few pictures;
And I decided to do a visual comparison for you with a Colt LE6940 which was also brought in by 'I Run Guns' a few months ago:

I won't get into a full Review of the 901, as many are available online (ex. 'Guns America' does a thorough review of the 901), but I'll just touch on a few differences between the 901 and 6940. And I won't get into the functionality of the 5.56/.223 conversion kit, as you can readily read about that online as well and it is very straight-forward. A nice thing to note however, is that the 901's coming into the Canadian market have the conversion kits included (which are simply a buffer tube and spring for 5.56/.223 calibre, and the mag-well adapter for 5.56/.223, which affixes to the receiver by utilizing the stock cross-pins). The Colt LE901-16S came with a 'Magpul' 7.62x51/.308 - 20/5 PMAG, cable lock, chamber flag, (3) rubber picatinny rail 'ladder' guards and Manual.
So first off, a noticeable aspect of the 901 is the obvious enlarged receiver and mag-well for the 7.62x51/.308 calibre, as well as the reinforced receiver at the trigger. Due to this receiver reinforcement, the 901 uses longer trigger and hammer pins, which you will have to save and re-use if doing a trigger upgrade (or, for example, 'Geissele' manufacturers specific longer pins for the Colt 901):

Another difference on the 901 is with the folding front sight, which utilizes a slide-lock for stability against higher recoil with the larger 7.62x51/.308 round;
[Note: You can also see in this picture the Vortex flah hider on threaded barrel, and that the barrel is stamped, which reads 'C MP, .308 WIN 1/12,' for "Colt, Magnetic-Particle tested, .308 Winchester calibre, 1/12 RH twist"]
[Note: Another subtle difference on the 901 that you can see in this picture is the use of (2) shallow set-screws at the front end of the quad-rail, one on each side at the 3 & 9 o'clock positions, which aid in securing the removable bottom rail section against the highter recoil]:

The difference on the 901 that has the most 'feathers ruffled' is Colt's use of a proprietary charging handle, which incorporates a side 'rib' on the length of the handle for rigity against a stronger AR-10 buffer spring, and a bottom 'tab' for rigidity at the T-handle; I am told by several Manufacturers that an after-market charging handle for the 901 will be produced (ex. ambidextrous, etc.), but which is just a matter of time. Like many of the things we are 'used to' in the Industry.
[Note: You can also see the 'Troy' rear BUS with dual-apertures, which has been nicely tagged 'Colt Defense', as well as the 'VLTOR' IMod stock on the 5-position receiver extension]:

Overall, this rifle feels very solid, and is almost perfectly balanced on a finger at the front of the mag-well. Should be a promising option in the trend of modular weapons.
So just a quick overview, but once again, thank you to the Team at 'I Run Guns' for solid customer service and a very fast transfer process; I look forward to our continued business in the future.
PS - I've got optics for the 901 on the way as we speak, so maybe I'll post a few more pictures when it's ready to go;
Stay safe
I came home last Thrusday to find a fresh Colt 901 waiting for me, so I thought I'd do Jason and the Team at 'I Run Guns' a solid, by posting (my first Thread, and) a few pictures;
And I decided to do a visual comparison for you with a Colt LE6940 which was also brought in by 'I Run Guns' a few months ago:

I won't get into a full Review of the 901, as many are available online (ex. 'Guns America' does a thorough review of the 901), but I'll just touch on a few differences between the 901 and 6940. And I won't get into the functionality of the 5.56/.223 conversion kit, as you can readily read about that online as well and it is very straight-forward. A nice thing to note however, is that the 901's coming into the Canadian market have the conversion kits included (which are simply a buffer tube and spring for 5.56/.223 calibre, and the mag-well adapter for 5.56/.223, which affixes to the receiver by utilizing the stock cross-pins). The Colt LE901-16S came with a 'Magpul' 7.62x51/.308 - 20/5 PMAG, cable lock, chamber flag, (3) rubber picatinny rail 'ladder' guards and Manual.
So first off, a noticeable aspect of the 901 is the obvious enlarged receiver and mag-well for the 7.62x51/.308 calibre, as well as the reinforced receiver at the trigger. Due to this receiver reinforcement, the 901 uses longer trigger and hammer pins, which you will have to save and re-use if doing a trigger upgrade (or, for example, 'Geissele' manufacturers specific longer pins for the Colt 901):

Another difference on the 901 is with the folding front sight, which utilizes a slide-lock for stability against higher recoil with the larger 7.62x51/.308 round;
[Note: You can also see in this picture the Vortex flah hider on threaded barrel, and that the barrel is stamped, which reads 'C MP, .308 WIN 1/12,' for "Colt, Magnetic-Particle tested, .308 Winchester calibre, 1/12 RH twist"]
[Note: Another subtle difference on the 901 that you can see in this picture is the use of (2) shallow set-screws at the front end of the quad-rail, one on each side at the 3 & 9 o'clock positions, which aid in securing the removable bottom rail section against the highter recoil]:

The difference on the 901 that has the most 'feathers ruffled' is Colt's use of a proprietary charging handle, which incorporates a side 'rib' on the length of the handle for rigity against a stronger AR-10 buffer spring, and a bottom 'tab' for rigidity at the T-handle; I am told by several Manufacturers that an after-market charging handle for the 901 will be produced (ex. ambidextrous, etc.), but which is just a matter of time. Like many of the things we are 'used to' in the Industry.
[Note: You can also see the 'Troy' rear BUS with dual-apertures, which has been nicely tagged 'Colt Defense', as well as the 'VLTOR' IMod stock on the 5-position receiver extension]:

Overall, this rifle feels very solid, and is almost perfectly balanced on a finger at the front of the mag-well. Should be a promising option in the trend of modular weapons.
So just a quick overview, but once again, thank you to the Team at 'I Run Guns' for solid customer service and a very fast transfer process; I look forward to our continued business in the future.
PS - I've got optics for the 901 on the way as we speak, so maybe I'll post a few more pictures when it's ready to go;
Stay safe