Bolt Upgrade Kit includes the following. Mil-Spec Extractor, Extractor Pin, RRA Heavy Duty extractor spring & buffer, and three RRA Gapless gas rings. Extractors are machined from barstock along with proper heat treatment for superior durability and reliability. RRA Heavy Duty extractor springs and buffers substantially increase extraction reliability on all AR15s and are a must for M16s, especially in heavy use/adverse conditions. RRA Gapless rings provide a superior seal with low friction for positive function in all conditions. Superior products at a superior price. PK Firearms has solved more problems with customer firearms with this simple and affordable upgrade than anything else available. 

Our Price: each $19.95

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Top of the line MP tested Bolt assemblies. Manufacturer is OEM supplier to the major AR companies.

Our Price: each $60.00

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CMT 5.56 Chrome bolt assembly.

Our Price: each $65.00

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Mil-Spec, Govt. contract M16 stripped bolt carrier.

Our Price: each $60.00

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Very high quality RRA bolt group assembly. 

Our Price: each $130.00

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Rock River Arms M16 Bolt Group Assembly, very high quality.

Our Price: each $130.00

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Rock River Arms AR-15 chrome bolt assembly.

Our Price: each $165.00

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Young Manufacturing Chrome Bolt Carrier Assembly.

Our Price: each $175.00

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Young Manufacturing M-16 Chrome Bolt Carrier Assembly.

Our Price: each $175.00

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Young National Match Bolt Group assembly for the M16.

Our Price: each $205.00

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6.8 bolt assembly.

Our Price: each $65.00

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Features the larger bolt face diameter for the 6.8 x 43 Rem SPC.

Our Price: each $135.00

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