first off moderators move if posted in the wrong spot. this is to good of deal to not post up though. for you guys looking for something like the flaming pig but cheaper this is it. there is a video to watch and this is on sale for a third or less than what it normally sells for. it was originally $64.94 when i saved it to my wish list.

http://www.amazon.com/gp/product/B00G3O95CQ?colid=78CHLTJKUB1D&coliid=IQKTJ6QG2LSWQ&ref_=wl_it_dp_o_pd_nS_ttl

Would probably buy the KAK product before that.  Cheaper and a more well known brand.

http://www.kakindustry.com/kak-industry-flash-can

The kak Is a flash can. The grg from what I have been able to find is a true 3 piece brake similar to a krink brake.

The KAK is light but provides no back pressure.  

This is more Krink style and is less.  Works fine.  It's a heavy bastard, though.

http://www.amazon.com/Krinkov-Muzzle-Device-Pressure-Reducer/dp/B00C6ON82U/ref=pd_rhf_ee_s_cp_1?ie=UTF8&dpID=41%2B28Hi9-PL&dpSrc=sims&preST=_SL500_SR135%2C135_&refRID=075ZGEHHYCVG23NDFDQZ