Does the Cross Machine Tool UPUR-1LH Billet Left work with the PSA 5.56 Premium Full Auto?
Upper Receiver
Cross Machine Tool UPUR-1LH Billet Left Handed
from $198.00
Bolt Carrier Group
PSA 5.56 Premium Full Auto
from $119.99
upper and Palmetto State Armory bolt carrier group compatibility
Yes, they fit
The Cross Machine Tool UPUR-1LH Billet Left Handed works with the PSA 5.56 Premium Full Auto. Our compatibility rules found no conflict between them.
Checked by the same rules the AR builder runs on every part you add: caliber, frame size, receiver pattern, thread pitch and gas length.
Fit is judged from the specs retailers list, which can be missing or wrong. Confirm with the manufacturer before you buy, and have a qualified gunsmith check any build before you fire it.
How often builders pair the upper and Palmetto State Armory bolt carrier group
Backed by thousands of qualified builds that have both an upper and a bolt carrier group.
Share of builds with the PSA 5.56 Premium Full Auto and any upper
Cross Machine Tool UPUR-1LH Billet Left
Not in enough builds yet to report.
PSA 5.56 Premium Full Auto
- Of bolt carrier group picks
- 0.7%
- Median paid
- $120
How we count ⌄
These shares come from GunPartPicker's build data: real parts lists people put together while planning a purchase, not sales or surveys. A build counts a part only when it is the final pick for its slot, so parts that were swapped out never count. Fit never comes from these numbers; it comes from our compatibility rules alone.
Frequently built with the upper and Palmetto State Armory bolt carrier group
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Charging Handle
Fits both
Lower Receiver
Fits both
Gas Block
Trigger
Pistol Grip
Stock & Brace
Muzzle Device
Handguard
Expo Arms® M-LOK Patrol Series
Fits both
Cross Machine Tool UPUR-1LH vs PSA 5.56 Premium Full Auto: specs and prices
| Cross Machine Tool UPUR-1LH | PSA 5.56 Premium Full Auto | |
|---|---|---|
| Best price | $198.00 at AR15 Discounts | $119.99 at Palmetto State Armory |
| Stores | 2 of 3 in stock | 1 of 1 in stock |
| Assembly | Stripped | n/a |
| Platform | AR-15 | n/a |
| Receiver Type | Billet | n/a |
| Cartridge | n/a | 5.56 NATO |
| Style | n/a | Full-Auto |
Both for $317.99 at today's best prices.
Today's best prices and 90 day price history
Every store we track for each part, cheapest in stock first. Prices are checked through the day.
Price history, last 90 days
- Cross Machine Tool UPUR-1LH Billet Left: lowest $198.00 on Jul 5, highest $198.00 on Jul 5 over the last 90 days.
- PSA 5.56 Premium Full Auto: lowest $79.99 on Jul 31, highest $119.99 on Jul 12 over the last 90 days.
Bolt Carrier Groups most paired with uppers
The Cross Machine Tool UPUR-1LH Billet Left is not in enough builds yet, so these are the most picked next to any upper. Only parts our rules say fit the Cross Machine Tool UPUR-1LH Billet Left are listed.
Upper Receivers frequently paired with the PSA 5.56 Premium Full Auto
Most picked next to it in real builds. Only parts our rules say fit the PSA 5.56 Premium Full Auto are listed.
