Colt AR6721 Ten-Step Transformation

[Molon]

Colt AR6721 Ten-Step Transformation


Start with a stock Colt AR-15 A3 Tactical Carbine (AKA a Colt AR6721) . . .

Step 1. Replace the factory barrel assembly with a Noveske stainless-steel Recon barrel assembly including a set-screwed and taper-pinned low-profile gas block.

Step 2. Replace the factory handguards with a Geissele 13” SMR MK8 M-LOK free-float handguard.

Step 3. Replace the A2 flash-hider with a Smith Enterprise Vortex flash-hider.

Step 4. Install Knight’s Armament front and rear back-up iron sights.

Step 5. Replace the factory fire control group with a Geissele SSA-E fire control group.

Step 6. Replace the A2 grip with a Magpul MIAD grip.

Step 7. Replace the factory trigger-guard with a Magpul aluminum enhanced trigger-guard.

Step 8. Replace the factory buttstock assembly with a Magpul UBR buttstock assembly.

The transformed carbine (without a weapon mounted light or optic mounted) weighs-in at 7 pounds, 12 ounces.



















Step 9. Install a Schmidt & Bender Short Dot LE in a LaRue Tactical SPR-E mount.










Step 10. Add a weapon mounted light, sling, bipod or fore-grip as needed.







Arisaka In-Line M-LOK mount.






Magpul cantilever M-LOK mount.






Magpul off-set M-LOK mount.





….




While evaluating the accuracy of various hand-loads from the Recon barrel, shooting from a bench-rest at a distance of 100 yards and using the Short Dot LE set at 4X magnification, the Recon barrel produced the 10-shot group pictured below using Sierra 55 grain BlitzKings. The group has an extreme spread of 0.77".
















....

[GregP220]

Sweet blaster!

That rail is on my very short list...

[Benito]

That is seriously a sweet set-up.
I am just wondering why you didn't build on a stripped upper if you were going to swap out so many of the original parts.

[bfk4lyfe]

I think I remember you saying in an old post that you zero the Kac sights at 50 yards using the "2" setting on the rear, is that still the case?

[BUBBAGUNS]

That is seriously a sweet set-up.
I am just wondering why you didn't build on a stripped upper if you were going to swap out so many of the original parts.

I agree with this.

[SilverBullet432]

Why? You spent more money replacing parts than it would have cost to build it. Nice gun though.

[556BlackRifle]

Nice setup Molon!

[556BlackRifle]

Why? You spent more money replacing parts than it would have cost to build it. Nice gun though.

Sometimes it's not about the money. It's about the experience.

[TF82]

Why? You spent more money replacing parts than it would have cost to build it. Nice gun though.

Maybe he already had the 6721. I'm in the process of refreshing a 6721 too. I went in a different direction, but Molon, that has to be one of the best looking rifles out there. The MK8 is so clean looking.

[SilverBullet432]

True