Heavier buffer spring?
- Thread starter para1505
- Start date
It’s called tuning bro, it could need a spring but probably an adjustable gas block and a heavier buffer. You won’t know about anything for sure but it needing a gas block until you shoot it ...but usually at least a 5+ oz buffer is a good start.
I'm dealing with the same challenge, but on a gas piston AR10.
An adjustable gas block would be my first choice. I used a Superlative Arms adjustable block on my AR15, JP Enterprises was the other one I liked.
Too much gas is the problem, swapping out other parts that doesn't reduce the gas flow is somewhat of a Band Aid approach. If you end up needing a stronger buffer spring at least you'll be able to fine tune the system with the adjustable block.
If you need a spring SprinCo has a good selection of quality springs. I was talking with them this morning, seem like good folks..
An adjustable gas block would be my first choice. I used a Superlative Arms adjustable block on my AR15, JP Enterprises was the other one I liked.
Too much gas is the problem, swapping out other parts that doesn't reduce the gas flow is somewhat of a Band Aid approach. If you end up needing a stronger buffer spring at least you'll be able to fine tune the system with the adjustable block.
If you need a spring SprinCo has a good selection of quality springs. I was talking with them this morning, seem like good folks..
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If it is overgassed, and it most likely is, then that needs to be addressed first.
Heavier spring will potentially cause cycling issues, a Tubbs flat wire spring usually won’t as it is only stiffer than factory with the bolt in battery and actually increases less when compressed. This could aide cycling by delaying unlock a smidge without hurting bolt travel.
Gas is what unlocks the bolt. Everything else in the system controls BCG movement. A heavier buffer makes the movement less abrupt, like a shock absorber on a car.
My 6.5C chugs like champ and isn’t a hard recoiling gun like it was initially and it began with getting the gas right with a 5.3oz buffer and a Tubbs spring.
Making sure the bolt travel is right is another key. You should have 1/10-1/8” clearance between bolt face and bolt stop with charging handle pulled all the way rearward. Correct this with shims or washers in the bottom of the receiver extension.
Heavier spring will potentially cause cycling issues, a Tubbs flat wire spring usually won’t as it is only stiffer than factory with the bolt in battery and actually increases less when compressed. This could aide cycling by delaying unlock a smidge without hurting bolt travel.
Gas is what unlocks the bolt. Everything else in the system controls BCG movement. A heavier buffer makes the movement less abrupt, like a shock absorber on a car.
My 6.5C chugs like champ and isn’t a hard recoiling gun like it was initially and it began with getting the gas right with a 5.3oz buffer and a Tubbs spring.
Making sure the bolt travel is right is another key. You should have 1/10-1/8” clearance between bolt face and bolt stop with charging handle pulled all the way rearward. Correct this with shims or washers in the bottom of the receiver extension.
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