help about Barrel Swap

[Pourv Lac Dionne 2008]

hello
my question is
i have found a A2 upper from Olympic Arms with 20 inch barrel

can i change the barrel for this one
Rock River Arms - .223, 10.5' Stripped Pistol Barrel Assembly
Product Code:RRA-AR0225ASY

Spec is :
* 10.5inch Chrome Moly Barrel
* .223/5.56 Chamber
* M4 Feed Ramps
* 1:9 Twist Rate
* Threaded 1/2 x 28 TPI
* Includes Barrel Nut, Handguard Cap and Front Sight Housing ('F' marked)
* Phosphate Coated

Thanks to help me

 

[ARWEN ACE]

yes

 

[angryeyebrows]

Absolutely...you'll just need to find an appropriate carbine gas tube. The other thing is if your new front sight is "F" marked, it will not be the correct height to use with an A2 fixed carry handle upper. The "F" sight/gas block is for use with a flat top upper receiver. It will work good enough but you may run into some elevation problems.

 

[Pourv Lac Dionne 2008]

if i install this part , all are ok after
VLTOR .750" Low-Profile Gas Block

 

[Pourv Lac Dionne 2008]

Where i can found carbine gas tube for this barrel and what do recommend me for the handguard

 

[angryeyebrows]

Arms East for a Stag gas tube. If you are using a low profile gas block (Vltor in the pic) and a regular barrel nut you could get a set of Troy FF 9" rails from Target Sports. They would be easy to install and would give you good versatility when adding accessories (light, sling mounts, vertical grips etc.).

This would be your cheapest free float rail to get the rifle functioning.

You'd still need some sort of front sight. Again the Troy folding front is a great option.