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Helluva Sale at AIM Surplus!


mikegideon

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MPI Tested M16 BCG's   $100

Eotech 512   $350

Mossberg 300 AAC Blackout barrel   $160

 

More stuff too. These just caught my eye. Get you some.

 

Yeah, I was pretty excited when I got that email.  Russian AK mags for just 10 bucks too.

 

That 300 blackout barrel was tempting.  I have an extra upper sitting around with nothing to do.  Do those go on a regular AR upper?

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Yeah, I was pretty excited when I got that email.  Russian AK mags for just 10 bucks too.

 

That 300 blackout barrel was tempting.  I have an extra upper sitting around with nothing to do.  Do those go on a regular AR upper?

 

Yes. Build it just like any other AR with all the same parts except the barrel.

 

The barrel will only work with supersonic ammo unless you have a suppressor.

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From the AAC website...

 

HANDLOADING INFORMATION
 
If you load your own ammo, pay special attention to all of the normal safety practices. Recommended powder for most supersonic loads is Hodgdon H110.
 
For subsonic, there are special requirements and nearly all published loads are non-optimal for the 300 BLK upper. Many existing loads were developed for Thompson Center® single-shot pistols, or for ARs by people not aware of the magazine limitations. These loads pay no attention to automatic rifle function and should not be used. Look for a load which results in a cyclic rate of 700 rpm or more. A1680 is recommended because its bulk density matches the case capacity and it will generate enough gas pressure to cycle the weapon.
Suggested subsonic load:
 
• R-P 300 AAC BLACKOUT brass 
• Remington 7.5 primers 
• 11.2 grains of A1680 powder (Adjust powder charge down as needed. Factory ammo is 1010 fps for 16" barrel) 
• Case length is 1.368 +0.000 -0.020
• Sierra 220 MK loaded to 2.120 OAL (this length is optimal for reliable feeding from USGI magazines)
• Chamber pressure 21,100 psi.
Edited by mikegideon
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