First of all I will disagree with those saying use whatever rifle you have for 3 gun.
Practice, technique, and your fitness level will all help you climb closer to the top of the leaderboard but everything else being equal a mil spec carbine doesn't even come close in a game where speed and hit percentage are extremely important.
It's the same as shooting a production pistol in the open division of IPSC.
It can be done but unless you're head and shoulders above the competition you'll be at the bottom to the middle of the pack.
The ones I will put at the top of the list simply because they began the 3Gun arms race is JP rifles.
The have created the captured spring buffer, the low mass BCG, the heat dissipating heat sink inside the handguard, the side charging handle upper and their own adjustable trigger before most other companies.
They also use adjustable gas blocks, rifle length gas systems, compensators, and rifle length buffer systems to minimize recoil and maximize second shot "A" zone hits.
This is in addition to their match grade barrels.
DPMS has the 3g2 rifle which is different from their first 3Gun rifle the 3G1 which had some JP components on it.
Another excellent 3Gun rig is the Noveske Rival. At over $3,000 USD it also uses JP's low mass BCG and a rifle length gas system.
I own a Stag 3G. I bought it in the month after the Sandy Hook incident in the middle of the full panicked buying frenzy.
I eventually replaced the Sampson hand guard with a 16.7" Noveske NSR keymod handguard so that it wouldn't require bolt on rail panels and it would be the same as my other 2 Noveske rifles.
If I were looking to buy or build a truly competitive 3 Gun rifle I would start by looking for one with a flared magwell for quicker reloads, a rifle length gas and buffer systems, a good trigger such as the Geissele S3G or SD-3G together with a match grade barrel.
Practice, technique, and your fitness level will all help you climb closer to the top of the leaderboard but everything else being equal a mil spec carbine doesn't even come close in a game where speed and hit percentage are extremely important.
It's the same as shooting a production pistol in the open division of IPSC.
It can be done but unless you're head and shoulders above the competition you'll be at the bottom to the middle of the pack.
The ones I will put at the top of the list simply because they began the 3Gun arms race is JP rifles.
The have created the captured spring buffer, the low mass BCG, the heat dissipating heat sink inside the handguard, the side charging handle upper and their own adjustable trigger before most other companies.
They also use adjustable gas blocks, rifle length gas systems, compensators, and rifle length buffer systems to minimize recoil and maximize second shot "A" zone hits.
This is in addition to their match grade barrels.
DPMS has the 3g2 rifle which is different from their first 3Gun rifle the 3G1 which had some JP components on it.
Another excellent 3Gun rig is the Noveske Rival. At over $3,000 USD it also uses JP's low mass BCG and a rifle length gas system.
I own a Stag 3G. I bought it in the month after the Sandy Hook incident in the middle of the full panicked buying frenzy.
I eventually replaced the Sampson hand guard with a 16.7" Noveske NSR keymod handguard so that it wouldn't require bolt on rail panels and it would be the same as my other 2 Noveske rifles.
If I were looking to buy or build a truly competitive 3 Gun rifle I would start by looking for one with a flared magwell for quicker reloads, a rifle length gas and buffer systems, a good trigger such as the Geissele S3G or SD-3G together with a match grade barrel.
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