Mossberg 590 - Manual (Page 20)

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CARE & CLEANING: The precision threads on your choke tube should be kept clean and lightly
oiled at all times.
During cleaning of the barrel, be certain a choke tube is properly installed. This will avoid residue
build-up on threads.
Extra-Full choke tubes are not recommended for use with buckshot or slugs.
The “Improved Cylinder” choke tube will usually produce the best accuracy with most slugs.
accu-choKe ™ TuBes
ACCU-CHOKE ™ TUBES - are designed for use with LEAD or STEEL shot. Each
durable choke tube is clearly marked, as a guide, with the pattern it will
produce.
To remove choKe TuBe: Loosen with choke wrench provided, turning it counterclockwise.
When the choke tube is loosened, remove it completely with your fingers. Place choke tube on
a clean, dry surface.
To insTall choKe TuBe: Screw the tube clockwise into barrel by hand and then tighten the
tube until snug with the choke wrench. Flush fitting tubes fit completely inside the barrel when
properly installed. Do not use excessive force when installing. Tube tightness should be
checked periodically.
Tube tightness should be checked periodically.
accu-choKe ™ TuBes
extended or
gauge iTem # leaD shoT paTTern* flush fitting
12 95235 Skeet Flush
12 95200 Improved Cylinder Flush
12 95170 Improved Cylinder Extended, Ported
12 95195 Modified Flush
12 95180 Modified Extended, Ported
12 95245 Improved Modified Flush
12 95190 Full Flush
12 95240 X-Full Flush
12 95268 XX-Full Turkey Extended, Ported
12 95267 XX-Full Turkey (Lead Only) Extended
20 95225 Improved Cylinder Flush
20 95220 Modified Flush
20 95215 Full Flush
20 95230 X-Full Turkey (Lead Only) Flush
20 95231 X-Full Turkey Extended, Ported
* Lead, steel, and other non-toxic shot patterns will vary substantially depending on shell
length, shot size, brand of ammunition, and the individual barrel. The shooter is urged to
conduct pattern tests before field use.