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Sprinco USA

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Sprinco USA Products

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SPRINCO USA REDUCED POWER KIT BUFFER XP 5-COIL BOLT EXTRACTOR SPRING
M4 CARBINE CS REDUCED POWER SPRING KITS

SPRINCO USA

In stock

£34.90 * £31.90 - £34.90*

Sprinco USA's Reduced Power Buffer Spring, known as the Yellow spring, is about 20% lighter than the White spring.
The Yellow spring was developed through collaboration with ammunition manufacturers and gunsmiths and was the preferred choice out of four samples.
For guns requiring a lighter spring, it is recommended to enlarge the gas port for improved reliability, and the Yellow spring is suitable for low power training rounds.

SPRINCO USA SPRING KIT-XP BUFFER W/ HD 5-COIL BOLT EXTRACTOR SPRING
M4 CARBINE/6.8 CS SPRING KIT

SPRINCO USA

In stock

£34.90 *

The Sprinco USA Extra Power Buffer Spring is designed to address M4 carbine reliability issues, specifically for challenges faced in the Eastern Asia Theatre.
The Red spring has design loads approximately 25% greater than the White spring, enhancing performance for various calibers including 9mm, 6.8 SPC, and .500 Beowulf.
Before using, refer to the tuning procedure reference documents, as the optimal spring choice may vary based on individual weapon characteristics and ammunition loads.

SPRINCO USA AR-15 30-ROUND MAGAZINE SPRING, FLAT WIRE
AR-15 30-ROUND MAGAZINE SPRINGS

SPRINCO USA

In stock

£15.90 * £15.90 - £33.90*

Magazine Springs

Flat wire magazine springs support indefinite storage at full capacity without spring fatigue and are designed to prevent over-compression with anti-tilt followers.
These springs ensure a uniform feed rate and improved support for the top 4 rounds, while being easier to load compared to round wire springs.
Compatible with most magazine bodies and anti-tilt followers including USGI, Magpul, Lancer, and Hexmag, with exceptions like Brownells USGI Tan followers and some ETS and HK mags.

SPRINCO USA LUCKY 13 BLACK EXTRACTOR INSERT & VITON O-RING 13 PK
AR-15 EXTRACTOR INSERTS & O-RINGS MIL-SPEC

SPRINCO USA

In stock

£21.90 * £6.90 - £21.90*

Extractor Springs

Sprinco USA produces Mil-Spec extractor inserts and O-rings, exceeding standard requirements, using their own high-quality molds and materials.
All Sprinco products are made in the USA, ensuring superior grade base materials over commercial or foreign imports.
The Black Extractor Spring Inserts and Viton CRANE O-Rings meet specific military specifications (MIL-PRF-6855-REV G and MIL-R-83248C).

SPRINCO USA SPRING KIT-XP BUFFER SPRING W/ DUAL EXTRACTOR SPRINGS
AR 308 M4 EXTENSION TUBE CS SPRING KIT

SPRINCO USA

In stock

£37.90 *

The Orange buffer spring is designed for heavy BCG carbine applications in .308/6.5 CM/.260 Rem calibers using standard 7" M4 extension tubes.
It is suitable for tuning over-gassed carbines in AR-10 pattern tubes with 3.25" buffers or for lesser calibers like 5.56.
This SPRINCO USA spring kit includes an extra power buffer spring and dual extractor springs for enhanced performance.

SPRINCO USA ENHANCED 4-COIL BOLT CARRIER EXTRACTOR CS SPRING 3-PAK
M16/M4 ENHANCED CARRIER EXTRACTORS

SPRINCO USA

In stock

£16.90 * £9.90 - £16.90*

Extractor Springs

Sprinco USA's Extractor Springs are heat treated, stress relieved, and cryogenically processed for durability, with a molybdenum disulfide coating for performance.
The 5-Coil spring is ideal for all 5.56 barrel lengths but may be too strong for 18"+ barrels or bolts with very tight tolerances, while the 4-Coil is recommended for longer barrels and brass reloading.
These extractor springs can withstand temperatures up to 750°F and are designed to be the only springs needed for the life of your bolt, with no need for D-Fender™ rings when using the 5-Coil version.

SPRINCO USA PROG. RECOIL SPRING 14LB.
1911 PROGRESSIVE RECOIL SPRING

SPRINCO USA

In stock

£14.90 *

Recoil Springs

SPRINCO USA M4 CARBINE BUFFER SPRING
M4 CARBINE CS INTERMEDIATE SPRING KITS

SPRINCO USA

In stock

£31.90 * £31.90 - £34.90*

The Hot White spring was an unintended production variation that falls between the White and Blue spring load specifications.
It became a valuable solution for customers seeking a performance level in-between the existing White and Blue springs.
This spring is suitable for those preferring Mil-Spec carbine springs but still want enhanced performance.

SPRINCO USA SPRING KIT-STD BUFFER & 4-COIL BOLT EXTRACTOR SPRING
M4 CARBINE CS STANDARD SPRING KITS

SPRINCO USA

In stock

£34.90 * £31.90 - £34.90*

The SPRINCO USA spring kit includes a standard power buffer spring with an equivalent load to a new Mil-Spec M4 Carbine Spring.
Designed for reliable performance in any properly maintained 5.56 Carbine, it is ideal for those who want the consistency of a new spring without frequent replacements.
This spring is optimal for shooters who prefer to maintain factory new Mil-Spec spring performance without seeking enhanced performance options.

SPRINCO USA AR-15 BOLT RING / GAS RING 9PK
AR-15 BOLT & GAS RINGS

SPRINCO USA

In stock

£13.90 * £7.90 - £13.90*

Gas Rings

SPRINCO USA SPRING KIT-XXP BUFFER SPRING & XP 5-COIL EXTRACTOR SPRING
M4 CARBINE CS SPRING KIT

SPRINCO USA

In stock

£34.90 *

The Orange extra extra power buffer spring is designed for heavy calibers like .308 / 6.5 CM / .260 Rem in carbine DPMS Pattern applications.
It is suitable for use with standard 7" depth M4 extension tubes and short 2.5" buffers, including aftermarket "heavy buffers".
The spring is also beneficial for tuning over-gassed carbines of any equivalent heavy calibers in AR-10 pattern tubes with 3.25" buffers or for lesser calibers such as 5.56.

SPRINCO USA AR .308 BOLT RING/GAS RING 9-PK
AR .308 BOLT & GAS RINGS

SPRINCO USA

In stock

£13.90 * £8.90 - £13.90*

Gas Rings

SPRINCO USA SPRING UPGRADE KIT-XP 5-COIL EXTRACTOR SPRING/INNER SPRING
AR .308 DUAL EXTRACTOR CS SPRING UPGRADE KITS

SPRINCO USA

In stock

£12.90 * £12.90 - £24.90*

Extractor Springs

SPRINCO USA's AR .308 Dual Extractor CS Spring Upgrade Kits feature heat-treated, stress-relieved, and cryogenically processed chrome silicon wirestock springs with molybdenum disulfide plating.
The XP 5-Coil spring offers a heavier load than OEM springs, eliminating the need for D-Fender™ rings or CRANE Viton O-Rings, and is suitable for all 5.56 BBL lengths.
These springs maintain performance under extreme duty cycles and temperatures up to 750°F, and the dual spring XP .308 sets can be used with or without CRANE O-rings.

SPRINCO USA UPGRADE KIT-4-COIL EXTRACTOR SPRING, INSERT, O-RING
M16/M4 EXTRACTOR SPRING UPGRADE KITS

SPRINCO USA

In stock

£9.90 * £9.90 - £18.90*

Extractor Springs

Sprinco's Extractor Springs are made from heat treated, stress relieved, and cryogenically processed chrome silicon wirestock, and are plated with molybdenum disulfide for enhanced performance.
The 5-Coil spring offers a heavier load than OEM springs, eliminating the need for additional rings, and is reliable for all 5.56 barrel lengths, though it may be too strong for certain bolts.
The 4-Coil springs are designed for extended duty cycles and are recommended for barrels over 18 inches, especially for those who reload their brass.

SPRINCO USA ENHANCED HAMMER SPRING
AR-15/M4 ENHANCED HAMMER SPRING

SPRINCO USA

In stock

£9.90 *

Hammer Springs

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