- Thread starter GHOSTMAN1
- Start date
IMHO, it depends on the gas port size and gas system length size.... and Aero / BA is normal GP sized.
I use Tubbs 308 Flatwire recoil springs on all my Large Frame AR's
As for the buffer... that will depend on the internal OAl of the carbine receiver extension.
The Aero version is a "DPMS Pattern" and requires the use of a 2.5" 308 carbine buffer....
A "Armalite Pattern" / Vltor length carbine receiver extension ( buffer tube ) requires the use of commonly available 3.25" Ar15 carbine buffers.
IMHO, buy the heaviest buffer you can find.
2.5" DPMS pattern buffer from KAK 5.3oz
https://www.kakindustry.com/ar-15-p...idual-buffer-parts/lr308-carbine-buffer-heavy
And as for a 3.25" buffer ( Armalite Pattern / Vltor length ) ... just buy a quality H# buffer.
Given your 20" barrel ( and most likely ) rifle length gas system.... using the above parts will basically give you the same buffer weight of a typical rifle length buffer system.
Remember, Large Frame AR's typically need little extra break in...so be patient if the first few dozen rounds are fussy.
I prefer heavy buffers and recoil springs... so YMMV.
I use Tubbs 308 Flatwire recoil springs on all my Large Frame AR's
As for the buffer... that will depend on the internal OAl of the carbine receiver extension.
The Aero version is a "DPMS Pattern" and requires the use of a 2.5" 308 carbine buffer....
A "Armalite Pattern" / Vltor length carbine receiver extension ( buffer tube ) requires the use of commonly available 3.25" Ar15 carbine buffers.
IMHO, buy the heaviest buffer you can find.
2.5" DPMS pattern buffer from KAK 5.3oz
https://www.kakindustry.com/ar-15-p...idual-buffer-parts/lr308-carbine-buffer-heavy
And as for a 3.25" buffer ( Armalite Pattern / Vltor length ) ... just buy a quality H# buffer.
Given your 20" barrel ( and most likely ) rifle length gas system.... using the above parts will basically give you the same buffer weight of a typical rifle length buffer system.
Remember, Large Frame AR's typically need little extra break in...so be patient if the first few dozen rounds are fussy.
I prefer heavy buffers and recoil springs... so YMMV.
An Armalite AR-10 recoil system can be bought direct from Armalite for $65. It comes with an H3 buffer.
Hope so... that's what I bought. Then started waffling on the 20". Still looking for a Rifle length gas option even if I go 18". Those seem a little harder to find than mid-length unless I chose the heavier profile.
Criterion has some great barrels and profiles.. w / RLGS.... Primary Arms might put them back on sale this BF
https://criterionbarrels.com/product-category/large-frame-ar/
https://criterionbarrels.com/product-category/large-frame-ar/
18" AR10/DPMS 308 barrel fluted
ar15performance.com
18” rifle length gas. They’re on sale for $279. If they shoot like the 223 wylde and 6.5 Grendel barrels I have from him, you’ll be pleased.
Thanks for the link. I watched and undoubtedly will watch again. The barrel nut on the M51E is a little different but I imagine I should be able to find more concerning the lapping there. I did get a G&G lapping tool expressly for the M51E.
