Lower Parts

Lower parts kit without trigger group for those upgrading to aftermarket triggers. All other parts included.

Affordable combat trigger with polished mil-spec components. Smooth 6lb pull without creep.

Complete AR-15 lower parts kit with a mil-spec fire control group, trigger guard, and A2 pistol grip.

Reduced-power hammer spring, increased-rate trigger return spring, and reduced-power firing pin spring for the Ruger LCP MAX. Drops factory pull weight by roughly 1 to 1.5 lbs.

Battery assist device that extends the bolt catch for right-hand manipulation. Faster reloads without breaking grip.

Premium lower parts kit with enhanced components throughout. SOLGW quality at every contact point.

Taller aircraft-grade aluminum magazine release button for every TaurusTX 22 model, installed drop-in.

Two-part true-ambi AR-15 kit pairing an enhanced bolt catch with a right-side battery-assist lever for the most aggressive reach on the list.

Core lower-receiver parts without a fire control group, trigger guard, or pistol grip.

Drop-in ambidextrous AR-15 magazine catch with an extended release bar for more leverage on reloads.

Complete mil-spec lower parts kit with A2 grip and Magpul trigger guard.

Hardened tool steel replacement striker for the TaurusTX 22, aimed at light strikes from a worn or damaged factory striker.

Geissele's oversized AR-15 bolt catch with checkered upper and lower pads for easier lock-back and bolt release.

Kuna buffer and +20% recoil spring that shortens bolt travel and eliminates the stuck-case-behind-buffer failure.

Drop-in polyurethane buffer that shortens bolt travel, reduces felt recoil, and prevents spent cases from lodging behind the bolt on Gen 2 Stribogs.

Drop-in CNC-machined bolt for the Ruger 10/22 with pinned aftermarket firing pin, headspaced extractor, and tighter tolerances than factory.

One-piece ambidextrous AR-15 bolt release that adds a right-side paddle in the trigger well without the play of a clamp-on lever.

Matte black Cerakote bolt knob spiral-cut to match the Ruger American Gen II spiral-fluted barrel, threaded 5/16x24 for a drop-on upgrade.

Patented drop-in ambidextrous AR-15 magazine catch that adds a left-side release so either hand drops the magazine.

Polymer bolt buffer for the Ruger 10/22 that replaces the steel factory pin and absorbs bolt impact instead of transferring it to the receiver.

Increased-rate extractor spring for the striker-fired Canik line, sold as the fix for spent cases that will not clear when the pistol is run hard.

PET-CF trip sled that interfaces the roller-delayed SP9A3 bolt with an FRT or Super Safety reset lever. The budget DIY alternative to a full machining service.

AR-15 pivot and takedown pins with a built-in install channel that removes the pivot-pin fight, plus a clean dish-head profile.

Threaded titanium bolt knob upgrade for the SIG Cross. M6x1.0 thread direct-fits the factory Cross bolt handle for faster manipulation and a wider gripping surface.

Stainless steel replacement bolt handle machined for the Ruger American Gen 2, threaded 5/16x24 to accept Anarchy Outdoors bolt knobs.

Black-nitride steel pin set with a convex tap-from-any-angle head, concave removal tip, and an EZ-Set detent-install hole.

Swiss-machined AR-15 pivot and takedown pins with low-profile high-grip heads and a magnetic detent install channel.

Steel ambidextrous AR-15 magazine catch with an enlarged paddle, built from heat-treated 8620 steel for duty use.

Enhanced AR-15 lower parts kit with BCM PNT trigger, Mod 3 grip, and enhanced trigger guard.

Seventeen-piece AR-15 lower parts kit with no fire control group and no grip, for builders bringing their own trigger.

CMC's 17-piece lower parts kit bundled with the company's 3.5 lb single-stage curved drop-in trigger.

Heavy-duty AR-15 pivot and takedown pin kit from a complete-rifle maker, with longer pins and bullet-tip relief divots.

EDM-machined hardened steel extractor that replaces the factory TX22 extractor for a tighter rim grip and fewer extraction failures.

Billet AR-15 magazine catch paired with an extended release button, sold as a complete drop-in catch-and-button set.

Billet DLC-finished AR-15 bolt catch designed to coexist with ambidextrous magazine releases, with tactile separation for gloved hands.

Duty-grade ambidextrous AR-15 magazine release with a low-profile 7075 aluminum lever on a steel catch, positioned to clear the bolt catch.

17-4 stainless AR-15 pins extended on the left side so the extra grip never fouls an ambidextrous safety.

One-piece 416 stainless steel guide rod replacing the factory two-piece polymer rod. Drop-in for TP9 SFx, METE SFx, Rival, and SFT.

Stainless-steel AR-15 magazine catch with a corrosion-resistant finish and included release spring, built for duty-grade durability.

Extended paddle mag release for the HK VP9. CNC aluminum with ambidextrous paddles that sit proud of the factory footprint for faster reloads.

Drop-on rubber overmolded grip wrap with finger grooves for the Ruger Mark IV 22/45 polymer frame.

Spring-loaded push-button takedown pin: internal keeper pins lock it without the receiver detent and retract for one-finger, tool-free removal.

Slip-on 3D-printed flared magwell that increases the Hellion's mag well opening area by ~70 percent for faster reloads.

Urethane recoil buffer for the Sub 2000 that cushions the bolt at the end of travel, decreasing felt recoil by about 30% on Gen 2 and Gen 3 guns.

Bottom-loading adapter that lets a standard AR-15 lower use Colt-pattern 9mm magazines with a blowback upper.

Enlarged, textured AR-15 magazine-release button that gives the trigger finger a bigger target without a full ambi conversion.

Polymer enhanced trigger guard that fills the rear gap and gives gloved fingers actual room to work.

The original AR-15/M16 ambidextrous magazine catch, a proven mil-spec steel part that adds a left-side release.

Gen II extended AR-15 magazine-release button with a larger contoured face for faster reloads without a full ambi-control conversion.

Lighter trigger-return spring for the PS90 Delta Trigger system that drops standard Delta pull weight toward the Delta Plus range.

Black-nitride steel medium-loop replacement lever for straight-grip Marlins, the upgrade that clears gloved hands and gives faster, smoother cycling on a .45-70.

AR-15 magazine catch that links to the bolt catch via a spring-steel wire, letting the shooter lock the bolt open with the trigger finger.

316 stainless AR-15 takedown and pivot pins with concave, contoured faces sized for gloved push-in.

MIM steel AR-15 bolt catch with aggressive diamond texturing on enlarged upper and lower pads, at a near-mil-spec price.

Mail-in machining service that makes an SP9A1 run an AR-15 forced reset trigger: the upper is cut for FRT reset clearance, a steel trip connector is fitted, and the buffer is trimmed.

Drop-in adapter that converts a mil-spec AR-15 lower to post-2004 Glock-pattern 9mm magazines for simple-blowback AR-9 builds.

Budget steel AR-15 bolt catch with an extra-wide lever face for easier manual operation, the lowest-cost upgrade on the list.

Budget steel AR-15 pivot and takedown pins with extended heads you can push and pull by hand, no punch needed.

Hard-anodized aluminum extended pin set that cuts weight off the lower while keeping tool-free takedown heads, in four colors.

Extended, wider bolt stop lever for the Mark IV 22/45 with a stepped thumb pad and a key-hole lock that holds it captive during grip removal.

Lightweight black polymer bolt knob cap threaded 5/16x24, compatible with all models of the Ruger American Gen II.

Machined hardened tool steel extractor with a positive hook that replaces the stamped factory Ruger 10/22 extractor.

EDM-machined hardened steel extractor that replaces the factory Mark series extractor for tighter rim grip and fewer extraction failures.

Machined hardened tool steel extractor for the Ruger PC Carbine and PC Charger, cut for impact and wear resistance.

Enlarged bi-directional magazine release for the Ruger 10/22 that drops a magazine on either a push or a pull.

Drop-in automatic bolt release for the Ruger 10/22. Releasing the bolt becomes a short pull on the charging handle instead of a two-hand operation.

Lightweight EDM-machined replacement bolt for the Ruger Mark IV with reduced reciprocating mass for faster cycling and lower felt recoil.

Extended magazine release button for the Ruger Mark IV 22/45 frame, replaces the small factory release for faster competition reloads.

Taller, wider 6061-T6 aluminum magazine release button for the Ruger PC Carbine and PC Charger, cut with deep grooves for grip.

Tuned competition recoil spring for the HK VP9. Drop-in replacement for the factory recoil spring, tuned for competition load reliability with lighter recoil feel.

Stainless steel captured guide rod replacement for the HK VP9. Drop-in internal upgrade that adds reciprocating mass for muzzle control.

Extended, non-ambidextrous Glock slide release for Gen 2-4 frames. Drop-in install, reuses factory spring and detent.

Grade 5 titanium AR-15 takedown and pivot pins, roughly 45 percent lighter than steel and corrosion-proof.

Replacement extractor for the Ruger 10/22 and Ruger MKII/MKIII/MKIV pistols. Sharper edge profile that fixes most extraction failures with cheap bulk ammo.

Oversized-head takedown and pivot pin set heat-treated and plated to mil-spec, sized for fast tool-free receiver separation.

T.REX-branded lower-parts kit for completing an AR-15 lower receiver.

Hardened tool steel replacement extractor for the SW22 Victory with a sharper hook that holds the case rim through ejection.

Drop-in billet stainless 10/22 bolt assembly with a black QPQ nitride finish, extractor, and hardened firing pin installed.

KNS .154-inch AR-15 non-rotating trigger and hammer pin set for cassette triggers, worn pin holes, and hard-use lowers.

Snap-fit polymer dust cover that drops in without removing the barrel nut or fighting roll pins.

Aluminum enhanced AR trigger guard with more glove clearance than the flat USGI part.

Low-profile rubber-like ladder cover for exposed 1913 Picatinny rails.

Six-panel polymer M-LOK covers that protect unused slots, add grip texture, and shield the support hand from heat.

Low-profile heat-resistant M-LOK rail covers for aluminum or polymer M-LOK handguards.

Half-slot Type 2 M-LOK covers that fill gaps between full panels, controls, and accessories.

Snap-together two-piece rail panels for 1913 Picatinny handguards.

Ambidextrous AR-style rotary safety that replaces the Ruger 10/22 cross-bolt push-button safety. Levers on both sides show condition at a glance.

CNC-machined heat-treated billet steel 10/22 bolt with a PVD finish, correct headspace from the factory, and a titanium firing pin and tool steel extractor pre-installed.

Drop-in S7 tool steel hammer for the SW22 Victory with a diamond-like coating and a dog-bone strut pin, cutting pull weight and lock time.

Extended aluminum magazine release for the Buck Mark, offered in a raised round button and a paddle profile.