Lock, Back Action left hand, percussion, by L&R
Part Number: LOCK-LR-800
Availability: In Stock
Price: $120.00
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Called “back action” because the mainspring hangs behind the tumbler, this lock was popular on percussion guns made in St. Louis, New York, California, Ohio, England and Belgium. Swivel breech double rifles require a back action lock mechanism. This lock can be modified for flint use. Side-by-side or over-and-under double rifles, shotguns, and combination guns often use back action locks.

Makers of bench rifles, target rifles, slug guns and Sniper’s rifles of the 1840 to 1880 preferred these long thin locks.

These nice locks feature a fly detent, for use with set triggers. The mainspring and stirrup result in fast lock time, making this lock a good choice for the serious target shooter.

The hammer has a 1.625” throw for use with barrels from 13/16” up to 1-1/4”. Our left back action lock exactly matches our right lock. Notched at the tail to hook under a wood screw, we recommend that you use our #6 x 1/2” screw, set permanently in the lock mortise.

Strangely, some original back action locks are much different inside, with the mainspring along the bottom, hooking a link mounted at the front of the tumbler. This odd geometry permitted using a conventional sear spring. But sear placement is always the same.

Faced with the task of repairing rotted out right and left locks on a Belgian double shotgun that is otherwise serviceable, it may be easier to simply trim these lock plates to fit the existing mortise, or inlet these new locks. Retrofitting new locks is a gunsmithing challenge since hammers may need to be bent, shortened, stretched, or you may refit your original hammers.

This lock exactly matches our right hand back action percussion lock.

This lock is shown at exact-full-size, in Track's new catalog for gunmakers and gunsmiths.
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Track's Catalog 18,
432 pages, full color,
filled with Exact Full Size Photos
of most gun parts.
Track's Catalog 18, 432 pages, full color, filled with Exact Full Size Photos of most gun parts.
Part Number: CATALOG-18
Availability: In Stock
Price: $10.00
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Bridle screw, 6-40 thread
Bridle screw, 6-40 thread
Part Number: LOCK-LR-100-BX
Availability: In Stock
Price: $2.00
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Fly detent, steel, tempered, with hole for pivot
Fly detent, steel, tempered, with hole for pivot
Part Number: LOCK-LR-100-FL
Availability: In Stock
Price: $3.25
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Sear spring screw, 6-40 thread
Sear spring screw, 6-40 thread
Part Number: LOCK-LR-100-SSX
Availability: In Stock
Price: $2.00
Order Quantity:
Sear screw, .60" length, 6-40 thread
Sear screw, .60" length, 6-40 thread
Part Number: LOCK-LR-100-SX
Availability: In Stock
Price: $2.00
Order Quantity:
Tumbler screw, .400" head diameter, 6-40 thread
Tumbler screw, .400" head diameter, 6-40 thread
Part Number: LOCK-LR-100-TX
Availability: In Stock
Price: $3.75
Order Quantity:
bridle, left, wax cast steel, use 6-40 screws
bridle, left, wax cast steel, use 6-40 screws
Part Number: LOCK-LR-200-BR
Availability: Item is currently sold out.
Price: $18.00
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hammer, 1.625" throw, left hand
hammer, 1.625" throw, left hand
Part Number: LOCK-LR-400-HA
Availability: In Stock
Price: $18.50
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link and pin, short, for back action
link and pin, short, for back action
Part Number: LOCK-LR-700-LI
Availability: In Stock
Price: $9.00
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Mainspring, tempered, inverted, left hand
Mainspring, tempered, inverted, left hand
Part Number: LOCK-LR-800-MS
Availability: In Stock
Price: $27.00
Order Quantity:
lock plate, 4.7" x 1.0", drilled & tapped, left hand
lock plate, 4.7" x 1.0", drilled & tapped, left hand
Part Number: LOCK-LR-800-PL
Availability: In Stock
Price: $32.00
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sear, tempered, use 6-40 screw, left hand
sear, tempered, use 6-40 screw, left hand
Part Number: LOCK-LR-800-SE
Availability: In Stock
Price: $18.00
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sear spring, flat style, tempered, left hand
sear spring, flat style, tempered, left hand
Part Number: LOCK-LR-800-SS
Availability: In Stock
Price: $4.25
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tumbler, tapped 6-40, cut for fly, left hand
tumbler, tapped 6-40, cut for fly, left hand
Part Number: LOCK-LR-800-TU
Availability: In Stock
Price: $26.00
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Mainspring Vise,
to safely compress a mainspring
Mainspring Vise, to safely compress a mainspring
Part Number: TOOL-VISE
Availability: In Stock
Price: $15.99
Order Quantity:
Mainspring Vise,
deluxe English style,
for safely compressing a mainspring,
made in the U.S.A.
Mainspring Vise, deluxe English style, for safely compressing a mainspring, made in the U.S.A.
Part Number: TOOL-VISE-DX
Availability: In Stock
Price: $29.99
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18308 Joplin St NW
Elk River, MN 55330-1773

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